And gemmules can survive just about anything.

而且胚芽几乎可抵东西。

And their gemmules can survive environments that don't have any oxygen at all.

而且它们的胚芽可在完全没有氧气的环境中存活。

Sponges can reproduce both sexually and asexually – and when they take the asexual route, usually in harsh conditions, they produce a tiny bundle of embryonic cells called a gemmule.

海绵既能进行有性繁殖也能进行无性繁殖——而在进行无性繁殖时，通常是在恶劣条件下， 它们会产生一个称为胚芽的微型胚胎细胞团。