上下

shàngxià
  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 shàngxiàwén "context")
  5. (used after a quantity) approximately; ... or so
  6. (in a social hierarchy) the high and the low; seniors and juniors (as in 上下和睦 shàngxiàhémù "harmony between superiors and subordinates")
  7. all members of a group (as in 舉國上下 jǔguóshàngxià "the entire nation")
  8. relative superiority (as in 不相上下 bùxiāngshàngxià "evenly matched")

CEDICT

Entry Composition

1 上 shàng
  1. (bound form) up; upper; above; previous
  2. first (of multiple parts)
  3. to climb; to get onto; to go up
  4. to attend (class or university)
  5. (directional complement) up
  6. (noun suffix) on; above
2 下 xià
  1. down
  2. downwards
  3. below
  4. lower
  5. later
  6. next (week etc)
  7. second (of two parts)
  8. to decline
  9. to go down
  10. to arrive at (a decision, conclusion etc)
  11. measure word to show the frequency of an action