返修机及品质不良机器的处理。

Poor quality repair machines and machine processing.

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所有找到的研究都是回顾性的观察研究，且品质不良。

All of the studies identified were retrospective observational studies and of poor quality.

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轻度忧郁症该有的症状除了睡眠品质不良的脑部活跃区之外，我都有加在笑话里头。

All symptoms of minor depression, except for the cerebral region responsible for sleep disorder, were encoded in the joke.

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