Although the morphological species concept is useful, it's not fool-proof.

尽管形态物种概念很有用，但并非万无一失。

This brings us to another way of defining a species; namely, the biological species concept.

这给我们带来了另一种定义物种的方法；即生物物种概念。

The biological species concept defines a species as the group of organisms which can interbreed.

生物物种概念将物种定义为可以杂交的生物群。

This definition can address some of the issues associated with the morphological species concept.

这个定义可以解决一些与形态物种概念相关的问题。

The biological species concept makes sure that cryptic species, those that look similar but do not interbreed, are separated.

生物物种概念确保将那些看起来相似但不杂交的隐匿物种分开。

One of the main problems with the morphological species concept is that members of one species may be split up because they look different.

形态学物种概念的主要问题之一是，一个物种的成员可能会因为看起来不同而分裂。