sit-up
n. 仰卧起坐

英英解释:

名词 sit-up:

  1. an stomach exercise in which a person sits up from a supine position without using the arms for leverage

动词 sit-up:

  1. not go to bed
  2. 同义词:stay up, sit up
  3. change to an upright sitting position
  4. 同义词:sit up