So how did these big flightless birds land all over the world?

那么这些不会飞的大鸟是如何登陆世界各地的呢?

And for a long time, scientists had a simple explanation for how these birds landed all over the world.

很长一段时间以来，科学家们对这些鸟类如何登陆世界各地有一个简单的解释。

The occupiers of land all over Europe were, the greater part of them, originally bond-men.

整个欧洲的土地占领者， 其中大部分最初是奴隶。

Down fell Emma! Away ran the cat! Up few the glass! And the water landed all over Grandma.

艾玛倒下了！猫跑了！上几杯！水溅到了奶奶的身上。

Lichtman: And for a long time, scientists had a simple explanation for how these birds landed all over the world.

Lichtman：很长一段时间以来，科学家们对这些鸟类如何在世界各地着陆都有一个简单的解释。