indicatory species

• 指示物种

indicatory species的用法和样例：

例句

1. Biju said that frogs in India, like frogs in South America, are considered an important indicator species for the health of an ecosystem.
   比优称印度的青蛙和南美的青蛙一样，被认为是生态系统健康的一个重要指示物种。