由于昆虫每年可以繁殖几次并产生大量后代，许多种类的昆虫通常能迅速适应环境的变化。

Because they can reproduce several times each year and produce large numbers of offspring, many insect species can generally adapt quickly to changes in their environment.

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许多种类的鸟和动物生活在森林里。

Many kinds of birds and animals live in the forest.

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许多种类的野狗几乎已经从地球上消失了。

Many kinds of wild dogs have nearly disappeared from the Earth.

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Many kinds of molecules make up your coffee There are the water molecules, the flavor molecules the milk proteins, etcetera.

许多不同种类的分子构成了你的咖啡,有水分子，气味分子，牛奶蛋白等等。

麻省理工公开课 - 热力学与动力学课程节选

We'll see later on, there are classes of computation that are inherently much more complex. We hate them, because they're costly, but they're sometimes inherently that way.

我们会稍后详细的讲讲这个,有许多内在更加复杂的种类的算法,我们痛恨它们，因为它们很耗时。

麻省理工公开课 - 计算机科学及编程导论课程节选

You know probably that within your bone marrows there's populations of cells, there are different kinds of cells within the bone marrow.

你也许知道的,在你的骨髓里,有许多种细胞,骨髓中有不同种类的细胞

耶鲁公开课 - 生物医学工程探索课程节选