1. Dipleurogenesis is a phenomenon observed in some species of amphibians.

双尾现象是在某些两栖动物物种中观察到的现象。

2. During dipleurogenesis, the embryo undergoes a unique developmental process resulting in the formation of two tails.

在双尾现象期间，胚胎经历一种独特的发育过程，导致形成两个尾巴。