An organism is an animal or plant, especially one that is so small that you cannot see it without using a microscope.
双语例句
例： Not all chemicals normally present in living organisms are harmless.
并非所有常见于有机体中的化学物质都是无害的。
例： insect-borne organisms that cause sleeping sickness.
引发睡眠疾病的虫媒微生物。