你能想象一周去四次健身房，以同样的重量，做同样的动作，锻炼同一块肌群，如此反复么？
Can you imagine going to the gym four times a week and doing the same workout with the same weight for the same muscle group over and over again?
这一现象在前四次衰退中反复出现。
最近在忙碌中一直关注着一个小孩被宝马车反复辗了四次致死的事件。
Recently I have been paying special attention to the affair that a child has been rolled across by a car for four times to death.
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