Why did an inhumane institution of course not everybody who defended it thought it was inhumane but why did that system survive, persist and grow?

为什么一个不人道的制度,当然不是所有捍卫它的人都觉得不人道,为什么奴隶制度还是会生根,发芽,成长

耶鲁公开课 - 美国内战与重建课程节选

Opponents of animal testing are quick to point out that it's not a humane way to learn scientific facts.

动物实验的反对者很快就指出，利用这种方法得到科学事实是不人道的。

需要动物实验吗？ - SpeakingMax英语口语达人