N-COUNT 生物;有机体;(尤指)微生物 An organism is an animal or plant, especially one that is so small that you cannot see it without using a microscope. 生物;有机体;(尤指)微生物
Not all chemicals normally present in living organisms are harmless.
并不是所有常见于生物体中的化学物质都无害。
...the insect-borne organisms that cause sleeping sickness.