講解文本:
sit-up 仰卧起坐Almost everyday, I do sit-ups before going to sleep.幾乎每天,我都會在睡前做仰卧起坐。
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Doing sit-ups is an effective way to exercise abdominal muscles.仰卧起坐是鍛鍊腹部肌肉的有效辦法。
瘋狂練習吧!
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