蛇是要蜕皮的。

A snake throws its skin.

youdao

当蛇蜕皮的时候，它是很不高兴的。

When a snake sheds its skin, its not happy about it.

youdao

我就是那一只正在蜕皮的蝉。

I am the very cicada in process.

youdao

Snakes are symbols of renewed life and fertility in the East ; because they shed their skins so they seem to be eternally young; and they're also phallic symbols.

在东方，蛇一般都是新生命或者多产的象征,因为，蛇的蜕皮，似乎能使它永远年轻;,蛇同样也是生殖力的象征。

耶鲁公开课 - 旧约导论课程节选

In The Epic of Gilgamesh they were the ones who got the plant of eternal youth. It's etiological.

在《吉尔伽美什史诗》中,蛇得到了可以永葆年轻的植物，所以蜕皮。

耶鲁公开课 - 旧约导论课程节选