translation.en: There are very industrious experiments being built on Earth -- one called LIGO -- which will detect deviations in the squeezing and stretching of space at less than the fraction of a nucleus of an atom over four kilometers.
translation.zh: 世界上有些实验需要耗费很多心血才能搭建起来 – 其中有一个叫LIGO的的实验 - 它将能检测到 每四公里的距离上 小于一个原子核范围的 空间振动。