Scientists claim that animals, including men, can live 5 times longer than their normal period of growth.

科学家们认为，动物，包括人类，生命期可以是其正常生长期的五倍。

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The site mine pressure observation showed that during the face roof normal period or the roof periodical pressurized period, the face equipment all presented a good stability.

现场矿山压力观测表明，无论是工作面顶板正常工作期间还是周期来压期间，工作面设备均表现出了良好的稳定性。

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The tests will be written in the normal class period.

测试是要在常规的课堂时间写出来。

麻省理工公开课 - 固态化学导论课程节选

But you will write during the normal class period.

但是你们要在常规的课堂时间做完。

麻省理工公开课 - 固态化学导论课程节选

If they're having a coronary artery bypass or they're having a heart transplant, then there's some period at which their normal heart - their heart is stopped and this machine assumes the functions of their heart.

病人在做冠状动脉搭桥手术,或者心脏移植手术时,病人自己的心脏,会停跳一段时间,而这台设备就能代替心脏工作

耶鲁公开课 - 生物医学工程探索课程节选

Dr. ORSZAG: I think that's right during a normal period of normal economic downturn.

NPR: Orszag Eyes Swift Spending Of Stimulus Funds

And next week he will meet Mr Gore to speed up the transition process, made all the more important because half of the normal period for it has already been used up by the post-election wranglings.

ECONOMIST: The end, at last

Meanwhile, the duration of the loans will revert to the normal overnight period from 30 days come mid-March.

FORBES: Surprise! Fed Raises Discount Rate