她在健身房锻炼时不慎撞到器械,伤了一根肋骨。

She accidentally hit a machine at the gym and injured one of her ribs.

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She accidentally hit a machine at the gym and injured one of her ribs.

ribs 是 rib 的复数形式,rib 指"肋骨",是人体胸腔两侧成对的弧形骨条,主要起保护内脏的作用。

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