Eventually I broached the subject of her early life.最后我提到了关于她的早年生活的话题。She broached the subject of a picnic to her mother.她向母亲提起野餐的问题.He broached the subject to the stranger.他对陌生人提起那话题....
专业学科充满陷阱，专套粗心大意的人。Specialist subjects are full of pitfalls for the unwary.工程学和工艺学互不相同，也有别于自然学科。Engineering and technology are disciplines distinct from one another and from science.这本书基本上会让那些不熟悉该学科的人对其有个初步了解。The book is ...