1 to substitute

2 to act on behalf of others

3 to replace

4 generation

5 dynasty

6 age

7 period

8 (historical) era

9 (geological) eon

1 representative

2 delegate

3 classifier: 位 wèi

4 classifier: 个 gè

5 classifier: 名 míng

6 to represent

7 to stand for

8 on behalf of

9 in the name of

1 ancient times

2 olden times

1 safe

2 secure

3 safety

4 security

1 sense of security

1 before the first wave subsides, a new wave rises (idiom); a new problem arises before the old is solved

2 many twists and turns to a story

3 one thing after another

1 lit. to hold a bowl of water level (idiom)

2 fig. to be impartial

1 flat land one could gallop straight across (idiom); wide expanse of flat country

1 to be discontented with one's home

2 to have adulterous relations after marriage (of women) (idiom)

1 passed on from generation to generation (idiom); to hand down