龙虾，为什么不会老死？

Lobsters grow all their lives. 龙虾，一辈子都在长。 From time to time, they shed their old shell. 它们会一次次，蜕掉旧壳。 Under the new shell, their body stays fresh. 新壳下面，身体一直很新鲜。 They do not seem to weaken with age. 它们好像不会，因为变老而虚弱。 In theory, a lobster could live past one hundred. 理论上，龙虾能活过一百岁。 Danger from outside is what really ends their life. 真正终结它们的，是外界的危险。