“收紧”的英语？

“收紧”的反义词：放宽, 紧缩。...

我被要求伸展手臂，收紧胸肌。I was required to hold out my arms and flex my pectorals.那位裁缝在衣服的腰部打褶收紧.The dressmaker gathered the cloth to the narrowest part of the waist.收紧肌肉,然后起跳.Gather up your muscles and jump....

“收紧”的拼音为：shōu jǐn...