讲解文本:
sit-up 仰卧起坐Almost everyday, I do sit-ups before going to sleep.几乎每天,我都会在睡前做仰卧起坐。
Doing sit-ups is an effective way to exercise abdominal muscles.仰卧起坐是锻炼腹部肌肉的有效办法。
疯狂练习吧!
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