It is, needless to say, being a bright, brilliant idea that one guy thought of, it has been assaulted on all sides and there is plenty of controversy about it.

况且这还是一个人在千思万想后,所总结出的辉煌又灿烂的智慧,这些理论受到来自各方的抨击,并且存在着诸多争议

耶鲁公开课 - 古希腊历史简介课程节选

Can you explain to us about stem cell research and why it's so controversial?

你能跟我们解释一下干细胞研究，
以及为什么这项研究会受到这么多的争议吗？

干细胞和伦理 - SpeakingMax英语口语达人