For example, groups of baboons that usually live apart as apparently separate species sometimes aggregate and interbreed, muddying their classification.

比如说，成群的狒狒通常分开居住，很明显被看作独居物种，但是有时他们会聚集和杂交，这样一来他们的分类就很模糊了。

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Cod have been caught off Nova Scotia for centuries, but their systematic slaughter began only after 1852; in terms of their biomass (the aggregate mass of the species), they are now 96% depleted.

在新斯科舍海岸捕捞鳕鱼已经有几个世纪，但是系统的猎杀仅仅是在1852年后开始的；按照鳕鱼的生物量(物种的总体数量)来说，96%现已被捕尽。

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The species in the broader (higher) sense is known as an aggregate.

广义的(或较高级的)种称为一个聚合种。

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