它们能轻易地延展到几英尺长，同时很牢固，柔韧性也很好。

They can easily be several feet in length and they're also very strong, very flexible.

youdao

他们认为，如果驾驶员前方车体部分的尺寸能够达到几英尺长，就能消散碰撞产生的能量，降低速度变化的突然性。

With several feet of car body in front of the driver, the energy of a crash can be dissipated and the suddenness of the change in velocity can be reduced, they say.

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也许有人会说，我们现在已经拥有了飞秒激光器，可以产生仅几毫秒长的脉冲。

"One may argue that now we have femtosecond lasers which generate pulses with a length of a few femtoseconds," he noted.

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But since life expectancy in the Ancient World was much less than ours, you didn't have usually several generations in these households, because older people just died.

但是古代人的寿命没我们长，一般不会出现几代同堂，因为年纪大了去世了。

耶鲁公开课 - 新约课程节选

Idealism is a position that's got a very long history in philosophy and for many classes would be worth taking a fair bit of time to consider more carefully.

唯心主义这个观点,在哲学史上占据了很长一段时间,并且值得我们花几节课,时间用心解读这个观点

耶鲁公开课 - 死亡课程节选

And there are various forces that play in the nucleus that will dictate when this will be stable and when it won't be.They isolated it, but it decays very quickly on the order of microseconds Lifetime on the order of microseconds.

在原子核中有很多种力,都会产生作用，当条件是稳定的,还有当它不是的时候，它们提取出来，但是它会以微秒的速度衰变,生命只有几微秒长。

麻省理工公开课 - 固态化学导论课程节选