The role of women in war has been a hot topic of debate since the Gulf conflict.

自海湾冲突以来，女性在战争中的作用一直是一个热门的争论话题。

Environmental conservation has been a hot topic in recent years.

环境保护是近年来的一个热门话题。

Education, to which parents attach much importance, is always a hot topic.

父母非常重视的教育问题一直都是一个热门话题。

The protection of intellectual property rights has been a hot topic in the past few years.

近年来，保护知识产权一直是一个热门话题。

A hot topic among scientists was the study of the ketoester.

科学家之间的一个热门话题是对酮酯的研究。