如果没有人购买象牙，偷猎者就没有理由杀死这些华丽的野兽。

If no one buys ivory, the poachers have no reason to kill these magnificent beasts.

youdao

投资者完全有理由保持警觉。

Investors have every right to be wary.

youdao

不用说，投资者完全有理由担心。

Needless to say, investors have every reason to fret.

youdao

There is some reason to believe that in the population known as "psychopaths," a population we'll return to later on when we discuss mental illness, this sort of instinctive empathy is broken and the pain of others just doesn't bother them very much.

我们有理由相信,在一类被称为“精神变态者“的人当中“,我们以后会继续讨论这类人,当我们讲到精神疾病时，他们就没有这种本能的移情,他们对别人的痛苦无动于衷。

耶鲁公开课 - 心理学导论课程节选