Put simply, RSI is an injury caused by repetitive activity.
简单说来，RSI是一项由于重复性的动作带来的损伤。
Exercise, on the other hand, is a structured and repetitive form of physical activity that you do on a regular basis.
锻炼，从另一个方面来讲，是一种结构化和重复的身体活动形式，前提是该活动要定期进行。
They asked a second group to imagine an activity that was equally repetitive, but less filling: pumping 33 quarters into a clothes dryer.
科学家又要求第二组人员想象等同的重复动作，但与吃无关：往干衣机里塞东西33次。
This activity is repetitive per se - even before it was documented by, let say, a video that is running in loop.
这一活动自身重复—甚至在它被回环播放的录像记录之前就是如此。
Exercise is a type of physical activity consisting of planned, structured, and repetitive bodily movement done to improve or maintain one or more components of physical fitness.
运动是一种有计划的、有组织的、可重复的，旨在促进或维持一种或多种体适能的体力活动。
Exercise is a type of physical activity consisting of planned, structured, and repetitive bodily movement done to improve or maintain one or more components of physical fitness.
运动是一种有计划的、有组织的、可重复的，旨在促进或维持一种或多种体适能的体力活动。
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