새들의 리스닝
Wild animals are known to listen to each other for warnings that predators are near. Some birds, for example, flee when neighbors make a loud noise to announce a snake’s presence.

고통의 차이
The study found that many people in poor and middle-income countries suffer unimaginable pain without any help. They lack even the cheapest painkillers to manage severe pain.

겨우 먹고 살 만큼 벌다
A: Pretty busy, I have been working the second job just to try to make ends meet.

미세먼지와 마스크
With all this pollution in the air, many people try to protect themselves and reduce their exposure. So, some people use face masks.

명랑한 성격
The adjective “sunny” is also used to describe people. A very happy person can be described as sunny.

술의 위험
Alcoholic products -- whether beer, wine or spirits -- are sold almost everywhere around the world.

훈제생선
To dry fish, you will need either a drying table or a place to hang them. If a table is used, it should have a top made of wire screen or thin pieces of wood with a space between each piece.

휴대폰 벨소리
Cellular phones are extremely popular in the United States and around the world, especially among young people. Now, teenagers are using a cell phone ringtone that many adults cannot hear.

먹을 수 있는 물병
Scientists and designers in London have found a possible solution to the problem of plastic bottle waste. The group at Skipping Rocks Lab has made a water bottle you can eat.

교복
American schoolchildren often wear uniforms if they attend religious or other private schools. Most public schools do not require uniforms.

아킬레스 건
The Greek poet Homer has given us many phrases. A famous one is “Achilles’ heel.” On your body, your Achilles’ heel is the tendon on the back of your ankle.

바가지를 쓰다
Things that cost a lot are expensive. We often do not mind paying a lot for high quality goods or services.

이 가게에서는 영어만
You can order plenty of sweet, tasty treats at Leon’s Frozen Custard in Milwaukee, Wisconsin. The restaurant’s many offerings include hot fudge sundaes, banana splits and root beer floats.

눈을 부릅뜨고 지켜볼게
I am looking for some new clothes for work. I need some coats and ties, but I don’t have much money to spend.

백만장자들이 사는 곳
Nearly six percent of Americans are millionaires. They each have at least one million dollars in savings.

결혼할 바로 그 사람
Hey Jason, I’ve always wanted to ask you. When did you know that Lily was the one?

기니 피그
Guinea pigs are native to South America. Some people say the small, very social creatures got their name from the fact that they make noises like a pig.

소식이 좋은가?
If you want to slow aging, you might want to eat less. Researchers in the United States say eating less can slow the aging process of cells in the body.

최고의 순간은 아직 오지 않았다
Hey, what’s wrong? I’m feeling very discouraged. How come? Well, I’ve applied to many jobs and I have yet to hear from any of them.

교통 문제
Many big cities in the United States have serious traffic problems. Too many cars travel on the freeways to and from the city. This heavy traffic causes delays and lots of pollution from cars that are using their engines but not moving anywhere.