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纳山:肌肉疲劳的其中一个原因是肌肉不够强壮有力,还有就是运动过度。
Nathan: And one of the reasons they get tired is because they're not strong and you overdo the activity.
youdao
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纳山:肌肉疲劳的其中一个原因是肌肉不够强壮有力,还有就是运动过度。
Nathan: And one of the reasons they get tired is because they're not strong and you overdo the activity.
youdao