squat-and-straighten-up exercise是什么意思，squat-and-straighten-up exercise的翻译，squat-and-straighten-up exercise音标、读音、用法和例句

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squat-and-straighten-up exercise是什么意思，squat-and-straighten-up exercise的翻译，squat-and-straighten-up exercise音标、读音、用法和例句_果味酸柯林斯词典