translation.en: But one of the convenient things about being an arthropod is that you have to molt. And every three months or so these animals molt, and they build a new limb and it's no problem.
translation.zh: 但是，所有合适的东西之一，对于一个节肢动物来说， 你不得不退壳。大约每三个月 这些动物退壳，并且它们获得了一个新的肢体，这不在是问题。