This behavior — called ballooning — has helped spiders disperse all over the globe.

这种被称为气球飞行的行为帮助蜘蛛散布到全球各地。

When we look at modern animals that die in the same environment that we're in today though, those modern animals, when they die, their bones disperse over the bad lands.

但是，当我们观察在与我们今天所处环境相同的环境中死亡的现代动物时，那些现代动物死后，它们的骨头会散落在荒凉的土地上。