如果车速限制是100千米每小时，生产一个足够大、足够强、时速能达到每小时200公里的引擎有什么意义呢？

What's the point in producing an engine that is big and powerful enough to go like 200 kilometers an hour when the speed limit is only 100?

youdao

强磁星，在画面顶端附近，以超过每小时7万千米的速度急速穿过超新星碎片云。

The magnetar, visible near the top of the image, hurtles through the supernova debris cloud at over 70 thousand kilometers per hour.

youdao

不过当一个非常大的细胞发出一个非常强的信号(好几十毫伏！)而且距离电路板1毫米以内的时候我们的设备还是可以抓到信号的。

But yes, when an extraordinarily large cell fired off a massive signal (many tens of millivolts!) within a millimeter of the plate, we could pick it up with our apparatus.

youdao