The governing of a distress call is actually an extremely delicate high-wire act for any young organism from an evolutionary point of view.

事实上，发出求救信号,是极其危险的行为,从进化的角度看,对任何一个年轻的生物体。

耶鲁公开课 - 心理学导论课程节选

Small animals make distress calls.

小动物发出求救信号。

耶鲁公开课 - 心理学导论课程节选