biome
noun [ C ] environment specialized uk/ˈbaɪ.əʊm/ us/ˈbaɪ.oʊm/
生物圈
a region of the earth's surface and the particular combination of climate (= general type of weather), plants, and animals that are found in it
Tropical rainforest is a very complex biome. 热带雨林是一个非常复杂的生物圈。