A whale's muscles and non-vital organs are able to function without oxygen for an extended period of time.

鲸鱼的肌肉和非重要器官能够在长时间缺氧的情况下正常工作。

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Travel for an extended period of time.

花一大段时间来旅游。

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I work best when I can immerse myself in something for an extended period of time.

我能长期沉浸在一种事情里面的时候我的工作状态是最好的。

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When a baby's head is stuck in the birth canal for an extended period of time, it cuts off the blood supply to the woman's surrounding organs.

VOA: special.2010.08.09

but over an extended period of time.

而是持续一段时间的事情。

I'm ~ing 课堂 - SpeakingMax英语口语达人

They would have to prove they've been here for an extended period of time.

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Nicola was travelling for an extended period of time, but she was going back to work after her trip.

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"What's striking has been the weakness of the recovery over such an extended period of time, " he added.

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