In fact, the butterfly spent the rest of its life crawling around with a heavy body and small wings.

事实上，蝴蝶的余生都是在用沉重的身体和小小的翅膀爬来爬去的。

But to his surprise, the butterfly got a heavy body and very small wings when it came out of the cocoon.

但令他惊讶的是，蝴蝶破茧而出时，身体沉重，翅膀却很小。

It's true that the dodo's small wings wouldn't have allowed it to leave the ground, but the scientists suggest that these were probably employed for balance while going over uneven ground.

渡渡鸟的小翅膀确实不允许它离开地面，但科学家们认为它们可能是用来在不平坦的地面上保持平衡的。