Probably the best answer is our body is worn out during the day and sleep is necessary to put it back into shape.

最佳的答案应该是，一天下来，我们的身体已经疲惫了，有必要进行睡眠，以恢复状态。

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Then he put it back in his bag and went to sleep.

之后，他把它放进他的包就睡觉了。

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Then he put it back in his bag and went to sleep.

之后，他把它放进他的包就睡觉了。

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