上下

shàngxià ㄕㄤˋ ㄒㄧㄚˋ

1. • the top and bottom of sth
2. • the full vertical extent of sth from top to bottom
3. • to go up and down
4. • before and after (as in 上下文[shang4 xia4 wen2] "context")
5. • approximately ... or so

     used after a quantity

6. • the high and the low seniors and juniors (as in 上下和睦[shang4 xia4 he2 mu4] "harmony between superiors and subordinates")

     in a social hierarchy

7. • all members of a group (as in 舉國上下|举国上下[ju3 guo2 shang4 xia4] "the entire nation")
8. • relative superiority (as in 不相上下[bu4 xiang1 shang4 xia4] "evenly matched")