1. The tadpoles metamorphose and emerge onto land. 蝌蚪变形并现身在陆地上。
2. The simplest explanation for this is that the axolotl lineage alone lost the ability to metamorphose, while others retained it. 对此最简单的解释是，只有蝾螈谱系失去了变形的能力，而其他族系则保留了这种能力。
3. From a detailed analysis of the salamanders' family tree, however, it is clear that the other lineages evolved from an ancestor that itself had lost the ability to metamorphose. 然而，通过对蝾螈族谱的详细分析，我们可以清楚地看到，其他谱系分支是从一个本身已经失去了变形的能力的祖先演化而来的。
4. The caterpillar will eventually metamorphose into a butterfly. 毛毛虫最终将蜕变成一只蝴蝶。
5. Like most amphibians these begin life in a juvenile "tadpole" state, then metamorphose into the adult form — except for one species, the axolotl, which famously lives its entire life as a juvenile. 像大多数的两栖动物一样，它们从幼年的“蝌蚪”状态蜕变成成年的形式——蝾螈这个物种除外，众所周知，它一生都处于幼年状态。
