Caterpillar
毛蟲
Have you seen baby butterflies? Probably not.
你見過蝴蝶寶寶嗎?應該沒有。
This is because an adult butterfly has never been a baby butterfly.
這是因為成年的蝴蝶壓根就不是由蝴蝶寶寶長成的。
Then, how did the adult butterfly grow up?
那么,成年蝴蝶是如何長大的呢?
Butterflies, moths and some other insects once were caterpillars.
蝴蝶、飛蛾和其他昆蟲曾經都是毛蟲。

Caterpillars are born out of eggs.
毛蟲是卵生的。
They usually eat tree leaves, but some of them also eat other caterpillars or small insects.
它們通常吃樹葉,但它們有的也吃其他毛蟲或小型昆蟲。
The caterpillars eat a lot, so they are sometimes called "eating machines".
毛蟲很能吃,所以它們有時被戲稱為“吃東西的機器”。
When caterpillars get old enough, they change their forms into adult butterflies or adult moths.
毛蟲長大的時候,它們就會變成年蝴蝶或飛蛾。