For stretching, focus on the hamstring stretch, the hip lower-back stretch, and the hamstring back stretch.

拉伸方面——特别要关注腿筋拉伸、髋关节和腰背部拉伸、腿筋和背部锻炼。

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A very nice wheeled designer suitcase thumped up the wooden steps. The new tenant paused to stretch her lower back, placing a hand there for support.

那个新房客把一个非常漂亮的轮式名牌手提箱重重地放在木质台阶上，然后停下来，一只手支在后腰处，伸了伸腰。

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