Keystone species
01
关键种, 基石物种
a plant or animal that plays a very important role in keeping the balance of its environment, and if it disappears, many other living things can be affected
例子
Sea otters are a keystone species because they help control sea urchin numbers.
海獭是一种关键物种，因为它们有助于控制海胆的数量。
Wolves are seen as a keystone species in some forests.
在一些森林中，狼被视为关键物种。
