这种情况可以是永久性的或只持续几个小时。

The condition can be permanent or last for a few hours.

youdao

这些波浪，内波，可能会有几万米长，持续几个小时。

These waves, internal waves, can be tens of kilometers long and can last several hours.

youdao

手术会在全身麻醉下进行，所以病人在手术中持续几个小时是处于睡眠状态。

You will be under general anesthesia - asleep - during the operation which may last several hours.

youdao

Hard to imagine anybody doing this for more than a couple of hours.

很难想象谁能持续几个小时这样做

耶鲁公开课 - 古希腊历史简介课程节选

gardening programmes, for hours of gardening programmes.

园艺节目，持续几个小时的园艺节目。

拥有庭院的意义 - SpeakingMax英语口语达人