Four out of five animals on Earth are nematode worms -- if all solid materials except nematode worms were to be eliminated, you could still see the ghostly outline of most of it in nematode worms.
地球上80%的动物都是线虫 假如地球上除了线虫以外所有的固态物质都消失 你还是可以从线虫身上看出曾经的地球痕迹