백신의 유래
The spread of dangerous diseases around the world is not new. As trade and colonization expanded worldwide over hundreds of years, so did some dangerous diseases.

야생 자명종
Francie Lubbe of South Africa awoke one morning during her safari trip to an impressive sight. Two female lions were licking the outside of her tent!

청량제 같은 것
Sarah: I love the new baseball coach. He’s got great ideas for making us better players. Mandy: He does. He’s like a breath of fresh air for the team.

길게 보면
Hey, do you think it’s better to buy a used car or a new car? I think it’s better to buy a new car.

보잉 787
The company is calling its new plane the Seven Eighty-Seven Dreamliner. The plane is Boeing's first new jet since nineteen ninety-five. The Seven Eighty-Seven is designed to travel great distances.

도시의 공기
The World Health Organization study on urban air quality says those most affected live in the world's poorest cities. The study finds urban air pollution has nearly doubled in 3,000 cities over the past two years.

고대 문서를 열지 않고 읽는다
Scientists in Switzerland say they have improved a method to read age-old documents without even touching them.

운전
Today, we talk about expressions that began behind the wheels of automobiles. Now they are common expressions that we use in everyday conversations.

가장 기본적인
Food expressions are popular with language learners. They combine two things important to every culture: food and language.

파산하다
Emily: How expensive? Cindy: Very expensive way too much for me. I can’t afford it and I don’t want to break the bank.

베트남 쌀국수, 라면, 메밀 국수
If you live in India, chances are you are most interested in pho -- a Vietnamese soup with a light and flavorful liquid base, rice noodles, spices and meat, such as beef or chicken.

가벼운 경고
Hey, I heard you went to court yesterday to settle your speeding ticket. How did things go?

이 세상 맛이 아닐 정도로 맛있어
Hey, do you know of any good Thai restaurants around here? Yes I do! There is one just a block away. Their food is better than good.

얘기가 나왔으니 말인데
I got an email from John this morning. He wants us to come over for dinner tomorrow. Speaking of which, did you know he is moving to Florida?

목재 건물
Wood has been an important building material for homes and other structures in many areas since ancient times. Modern tall buildings, however, are made out of man-made products, such as steel, concrete and glass.

배와 뇌는 연결되어 있다
A new study provides more evidence that there is a deep connection between our gut and our brains.

벽화
We devote a significant amount of money to cleaning graffiti. And so in 2007, when the city was seeing an uprise in a lot of different graffiti bombers. The council member at that time decided that we might wanna, we should try something creative.

모든 것
Today let’s talk about … everything. American English has many ways to talk about everything under the sun. Cradle to grave means an entire life cycle.

새 여권
The United States has begun providing new, electronic passports for its citizens. State Department officials say the new passports are designed to improve border security and travel.

행운을 빌다
Today, we talk about the word “knock.” To help explain expressions using “knock,” you will hear scripted dialogues.