1 secondary

2 auxiliary

3 deputy

4 assistant

5 vice-

6 abbr. for 副詞|副词 adverb

7 classifier for pairs, sets of things & facial expressions

1 classroom

2 classifier: 间 jiān

1 office

2 business premises

3 bureau

4 classifier: 间 jiān

1 lobby

2 lounge

1 waiting room (for train, bus etc)

1 to be discontented with one's home

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

1 lit. to reach the main room and enter the chamber (idiom)

2 fig. to gradually attain proficiency

3 to attain a higher level

1 wielding the halberd within the household (idiom); internecine strife

1 the name does not reflect the reality (idiom); more in name than in fact

2 Reality does not live up to the name.

3 Excellent theory, but the practice does not bear it out.

1 not just in name only, but also in reality (idiom)