We argue that the species aggregate ( or species complex) concept should better be adopted when identifying some plants documented in ancient Chinese literature .

我们认为在确定中国古籍文献中记载植物的学名时， 对部分植物宜采用集合种（ 或复合种） 的概念。

youdao

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。

youdao

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。

youdao