但是在北极，每次白天和黑夜都要持续好几个月，24小时的生物钟似乎没什么意义。
But it doesn't make sense to live by a 24-hour clock in the Arctic, where it's dark or light for months at time.
他说：他们会持续射击好几个小时，我们经常都不能入睡。
黑夜已经持续了好几个小时，沙漠已经把它在白天吸收进去的太阳的热量差不多散发掉了，空气是凉快、新鲜和纯净的。
The night had now been going on for so many hours that the sand had almost finished giving back all the sun-heat it had received during the day, and the air was cool, fresh, and clear.
手术进行了好几个小时，持续的紧张气氛变得压抑起来。
They operated for hours and the ongoing tension in the air became oppressive.
这其实只持续了几分钟，但对我来说这次事件仿佛持续了好几个小时。
It lasted for a few minutes - but to me that particular incident feels like it was for hours.
詹姆斯·雷文医生告诉美国国家公共电台说：“人们会有冲动，想跳上跑步机，然后一天持续走好几个小时。”
"There's a tendency to want to jump on the treadmill and walk for hours and hours a day," Dr. James Levine told NPR.
詹姆斯·雷文医生告诉美国国家公共电台说：“人们会有冲动，想跳上跑步机，然后一天持续走好几个小时。”
"There's a tendency to want to jump on the treadmill and walk for hours and hours a day," Dr. James Levine told NPR.
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