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Discussion About Technology and Contact Tracing Being Used to Stop Spread of COVID-19 and Possible Problems with Privacy; A Look at the Giant Oceanic Manta Ray in Mozambique; A Ninety-Year Old Japanese Woman Has Been Playing Video Games for 39 years.

CARL AZUZ, CNN 10 ANCHOR: This is your daily objective explanation of world events aka CNN 10 and I`m your anchor Carl Azuz. Happy to have you

watching this Wednesday. In the ongoing fight against COVID-19, nations around the world are increasingly turning to technology to track the

disease. This isn`t just about testing to find out who`s had it. It`s about finding out where someone who`s tested positive has been, whom he or

she might have interacted with and then telling those people that they might have been exposed to the disease. So let`s say you go to a party and

someone later tests positive for corona virus. You could get a call or text in the days afterward saying you might have been exposed and that you

should stay home and socially distance yourself for 14 days.

The intent is that this could prevent you from spreading COVID-19 before you even know you have it. This form of tracking is called contact tracing.

It requires a lot of workers to do it and the U.S. Centers for Disease Control says it`s a key strategy for preventing the spread of

corona virus. But those concerned about privacy say contact tracing could cause a lot of problems. For one thing, your smartphone can be used

without you being told about it to learn a lot about the places you go, the time you spend there and the people you see based on their smartphone info.

Critics say anyone with access to this data could use it illegally to track information people expect to kept private. They`re not only concerned

about the mass surveillance of Americans, they`re also uneasy about the possibility of this data still being collected even after the threat of the

corona virus has passed. So contact tracing, while useful is controversial.

(BEGIN VIDEO CLIP)

UNIDENTIFIED MALE: The scope of this is unprecedented especially for a respiratory virus.

UNIDENTIFIED FEMALE: California is busy building an army to find out who has COVID-19 and to keep it from spreading further. Along with robust

testing capabilities, these are key priorities under Governor Gavin Newsom`s plan to fully reopen the state.

GOVERNOR GAVIN NEWSOM: These are simply disease detectives that will be trained to support existing workforce --

UNIDENTIFIED FEMALE: Through a new program led by the University of California-San Francisco and UCLA, the state is virtually training, mostly

current state and county employees, as contact tracers.

UNIDENTIFIED FEMALE: So as a contact tracer --

UNIDENTIFIED FEMALE: Growing the force from 3,000 to about 13,000 by the end of the month. Once a positive test result is reported to the health

department, that person can expect to get a call.

UNIDENTIFIED MALE: We`ll talk to you about your symptoms and then really go over in detail where you`ve been in the last five days. We`re

go over 察看

interested in finding out with whom have you been in contact for more than 10 minutes within six feet without a mask on.

UNIDENTIFIED FEMALE: How much information are these people being asked to share?

UNIDENTIFIED MALE: We need to know who they are, where they are. Who their medical provider`s are. Where they`re going into isolation. We also

want to know where they`re working. This is - - not only about managing individuals but also trying to identify clusters of transmission.

cluster [ˋklʌstɚ] n.（人，动物等的）群，组

UNIDENTIFIED FEMALE: Just as tracers did when someone in Pasadena decided to throw a birthday party recently. One person brought a gift no one

wanted.

UNIDENTIFIED FEMALE: There was someone who was coughing who attended the party and there were subsequently five laboratory confirmed cases of COVID-

19.

UNIDENTIFIED FEMALE: One infectious person who led to five confirmed cases within the city plus possibly five or six other party goers who live

outside of Pasadena and were also beginning to show symptoms. All tracked down by talking to the person who initially tested positive for the virus

to get the names and numbers of those they had been around.

UNIDENTIFIED FEMALE: What we`re doing is for a particular reason, not to be invasive or intrusive or to take away any of their freedoms.

intrusive [ɪnˋtrusɪv] adj. 侵入的，闯入的；打扰的

UNIDENTIFIED FEMALE: Marie Klub (ph) normally works for the Pasadena Central Library. For now she`s assisting the city`s health department as a

contact tracer. After our call, she sends her notes to a public health nurse who does a secondary investigation.

UNIDENTIFIED FEMALE: They make a determination as to whether or not this person would be safe to go back to work.

UNIDENTIFIED FEMALE: Getting back to work, the ultimate goal not just for the recovered but for California as well.

(END VIDEO CLIP)

AZUZ: 10 Second Trivia. Which of these animals has the widest wingspan? Ostrich, manta ray, stingray or wondering albatross. The wingspan or disc

manta ray 鬼蝠魟鱼

albatross [ˋælbə͵trɔs] n.【鸟】信天翁

size of a giant manta ray can measure more than 25 feet across.

Manta means cloak or blanket in Spanish. A fitting term for the world`s largest ray. Giant oceanic manta`s can weigh up to 5,300 pounds,

significantly more than Great White sharks but as far as people are concerned, mantas are gentle giants. These cold blooded fish don`t have

the venomous barb on their tails that stingrays have. Still, our friends at Great Big Story tell us that people should never touch a manta ray in

barb [bɑrb] n.【动】羽支；倒刺；触须

the wild unless maybe they`re experts. So next today, we`re joining one for a swim both an expert and a manta off the coast of the east African

country of Mozambique.

Mozambique [͵mozəmˋbik] n. 莫桑比克（国名，位于非洲东南部）

(BEGIN VIDEO CLIP)

UNIDENTIFIED FEMALE: A manta rays are very large. They`re one of the largest animals in the ocean, certainly they`re larger than any of the ray

species. They can get up to about 25 feet across. When they come towards you when they`re that size, they look like an alien spacecraft as they go

overhead. They actually blight out the sun. It`s just so incredible to be that close to such a large animal especially one that you don`t have to

blight [blaɪt] v. to have a deleterious effect on; ruin; 毁掉; 破坏

fear. My name`s Andrea Marshall (ph). I`m a manta ray researcher and a marine biologist.

I`ve been in love with the ocean all of my life. Ever since I can remember I wanted to be a marine biologist. When I moved out to Africa with the

intention of studying things like Great White sharks, I actually shifted my focus over to manta rays when I realized that no one had ever done a study

on manta rays before. One of the things that makes manta rays so special is that they`re large and sometimes people feel frightened by them just

because of their sheer size. But actually they`re one of the most gentle animals in the entire ocean.

Manta rays are a very intelligent animal. They actually have the largest brain of any marine fish but one of the things that surprises me the most

is just the fact that they seek out encounters with humans. So this isn`t an animal that swims away from you. This is an animal that swims to you.

seek out 搜寻出

They recognize you almost as a friend. Southern Mozambique is just an incredible location. I`ve lived here for the last 15 years and even though

I`ve traveled all over the world to do my work. I enjoy coming back here because this is such a wild place. It`s so exciting.

One of the reasons I began work on mantas is because I knew that these animals were under threat. Recently, you know, within the last 15 to 20

years they have started to be fished for Asian tonics and as a result of this we`ve seen manta populations crashing across the globe. Even here in

tonic [ˋtɑnɪk] n. 补药

crash [kræʃ] v. to undergo a sudden severe downturn

Mozambique where we don`t even have a very aggressive fishery, we`ve seen the population collapse by up to about 98 percent over the last 15 years.

We`re starting to - - to lose them faster than we can study them. So it`s really important for me to get these messages across to people who don`t

have the opportunity to peek down into the underwater world.

(END VIDEO CLIP)

AZUZ: It`s not everyday you meet someone who`s been playing video games for 39 years. Then again, it`s not everyday you meet a 90 year old

YouTuber. Homaka Mori (ph) holds the Guinness World Record for being the oldest YouTube gamer. She`s known as "Gamer Grandma" to more than a

quarter million subscribers. Back in the day when she started playing, and by that we mean 1981. Years before the Nintendo entertainment system came

out, she says she was surrounded by kids who played games and thought they shouldn`t be the ones having all the fun.

The Japanese nonagenarian stated with a cassette vision console and never looked back. So is it really all fun and games. She says she`s always

nonagenarian [͵nɑnədʒəˋnɛrɪən] n. 九十多岁的人

cassette [kəˋsɛt] n.（装有录音或录像带的）卡式盒

game for playing but feels defeated whenever it`s game over. Of course she`s able to control and "console" herself. "Nintendo" you know you get

good at that after "PS-40" years of "un-boxing" games and constantly "switching" things up. I`m Carl Azuz. Last stop today is in Vietnam where

we`re happy to see the students of the Bi-lingual Canadian International School. They`re watching from Ho Chi Minh City also known as Saigon and

they`re commenting at YouTube.com/cnn.

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go over 察看

cluster [ˋklʌstɚ] n.（人，动物等的）群，组

intrusive [ɪnˋtrusɪv] adj. 侵入的，闯入的；打扰的

manta [ˋmæntə] ray 鬼蝠魟鱼

albatross [ˋælbə͵trɔs] n.【鸟】信天翁

barb [bɑrb] n.【动】羽支；倒刺；触须

Mozambique [͵mozəmˋbik] n. 莫桑比克（国名，位于非洲东南部）

blight [blaɪt] v. to have a deleterious effect on; ruin; 毁掉; 破坏

seek out 搜寻出

tonic [ˋtɑnɪk] n. 补药

crash [kræʃ] v. to undergo a sudden severe downturn; 坠落

nonagenarian [͵nɑnədʒəˋnɛrɪən] n. 九十多岁的人

cassette [kəˋsɛt] n.（装有录音或录像带的）卡式盒