例句：

　　He considers himself an expert on the subject.

　　他認為自己是這門學科的專家。

　　He earned a reputation as an expert on tax law.

　　他贏得了稅法專家的美名。

　　We employ an expert to advise on new technology.

　　我們聘用了一位專家擔任新技術顧問。

　　I don't profess to be an expert in this subject.

　　我不敢自詡為這方面的專家。

　　Harvey cured the pain with his own expert hands.

　　哈維用他那行家之手治愈了那病痛。