sit-up

柯林斯词典

sit-up (also situp) (sit-ups)

• 1. N-COUNT Sit-ups are exercises that you do to strengthen your stomach muscles. They involve sitting up from a lying position while keeping your legs straight on the floor. 仰卧起坐

  He does 100 sit-ups each day. 他每天做100个仰卧起坐。

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