1 office workers (as social group)

1 family

2 clan

1 race

2 nationality

3 ethnicity

4 clan

5 by extension, social group (e.g. office workers 上班族)

1 separated in time (usu. followed by a quantity of time)

1 nationality

2 ethnic group

3 classifier: 个 gè

1 one day apart seems like three years (idiom)

1 there is no knowing what is in a man's heart (idiom)

1 offspring a famous family (idiom); good breeding

2 blue blood

1 lit. a gulf between heaven and earth

2 wide difference of opinion (idiom)

1 to be cut off from the rest of the world (idiom)