亲缘关系相近的种被归入相同的属，然后很多属被归入到科，然后是目、纲、门，最后归入界(例如动物界)。

Groups of closely related species belong to the same genus, which in turn are clustered into families, then orders, then classes, then phyla, and finally into kingdoms (such as the animal kingdom).

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裸鼹鼠的寿命不能用体形来推算，它们的真正寿命是这个理论寿命的5.3倍。这个动物界的大寿星近年来引起了科研界越来越多的关注。

Naked mole rats lives 5.3 times longer than expected for their body size, a feat that has attracted increasing scientific attention in recent years.

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归有五个界：动物界、植物界、真菌界、茸鞭生物界——包括单细胞植物，如硅藻——和原生动物界，或单细胞生物体。

There are five kingdoms: animals, plants, fungi, chromists—including one-celled plants such as diatoms—and protozoa, or one-celled organisms.

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