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

These are very deep lesions that go not just on the surface of your skin like a blister would, but down into the dermis or deeper layers of the skins, as well.

这些伤非常深,它们不仅像水泡那样存在于皮肤表面,还深入到真皮层或者皮下更深的地方

耶鲁公开课 - 生物医学工程探索课程节选