事实上，睡眠中存在着一种基本的活动量。这种活动量是专门防止肌肉活动休止的。

In fact a basic amount of movement occurs during sleep which is specifically concerned with preventing muscle inactivity.

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不同于普通细胞的是，这种复制活动永无休止。

Unlike an ordinary cell, it never stops.

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其次，第二个活动就是喜欢无休止的争论。

Second, there is endless bickering.

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