Winter lasts for a long time in the mountains.

冬天在山里会持续很久。

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Untreated depression lasts for a long time and interferes with your day-to-day activities.

未经治疗的抑郁症会持续很长一段时间，还会影响你的日常活动。

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A battery might be given a name that includes the words long or last to tell customers that it lasts for a long time.

为电池起的名字肯定包含“长久”“持续”这类字眼，告诉消费者电池可以持续很长时间。

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"It turns out that caffeine actually lasts in your body for quite a long time, " Dollar said.

CNN: Caffeinated moms drink up to keep up