1. Precocial birds are able to leave the nest and feed themselves shortly after hatching.

早熟鸟类在孵化后不久就能离开巢穴并自己觅食。

2. The precocial nature of some mammal species allows their young to be more independent at an earlier age.

一些哺乳动物物种的早熟特性使得它们的幼崽在较早的时候更加独立。