Even in Aristotle's time, it appears slavery was a controversial institution and elicited very different kinds of opinions and responses.

就算是在亚里士多德的年代，奴役已经是争议性的制度,且引起了,十分不同的意见与响应。

耶鲁公开课 - 政治哲学导论课程节选

So although it is controversial,

尽管动物实验具有争议性，

需要动物实验吗？ - SpeakingMax英语口语达人

Hobbes was deeply controversial, as you might suspect, during his lifetime.

霍布斯在他的一生里，你们可能察觉到了，是很具有争议性的。

耶鲁公开课 - 政治哲学导论课程节选

Controversial in the sense that maybe it's not a good thing to do, or there might be some limits on what we want to do there in terms of integrating machines with people's brains.

它的争议性在于这可能并不是一件好事,在我们想往人脑中植入机械时,会不会受到某种限制

耶鲁公开课 - 生物医学工程探索课程节选