jjeong

1. Since Hemin was young, he has wanted to go abroad.

~ 이후로

2. A water molecule consists of two hydrogen atoms and one oxygen atom.

~ 로 이루어져 있다

3. The United States can be proud of its democratic educational heritage.

유산

1. Public service, widely practiced in other countries, is a fairly new concept in the United States.

개념

2. Originally, robots were found only in science fiction books.

공상과학소설

3. Network games are very popular with the youth lately.

~에게 인기 있는

1. The indigenous people of South America created a way of life remarkably suited to their environments.
놀랍게도

2. The death of so many natives immediately after the conquest caused a chronic labor shortage. 
만성적인

3. The chief difference between brown bear and black bear is size.
주로 

1. Before Greece reached its golden age, it first had to pass through the Dorian invasion.
침략

2. Few observers would have expected the Bolshevik rise to power in Russia
관찰자

3. The Aztecs of Mexico were probably the first people to domesticate the turkey.
가축화하다 

1. Cesar Chavez was particularly well-known for his readership.
잘 알려진

2. Part of the problem is the size and complexity of the job market itself.
복잡성

3. The natives evolved quite different techniques for human survival in adapting themselves to local conditions. 
발전시키다 

1. Jefferson also drew up the constitution for his state, Virginia and served as its governor.
헌법

2. They describe themselves  political as activists. 
정치적인

3. Many of these newcomers have worked very hard to establish themselves in their new land.
신참(새로 온 사람) 

height
높이

scrupulous
양심적인

immense
막대한