Deak is an expert in juvenile delinquency.

　　迪克是研究青少年犯罪的專家。

　　He is an expert in juvenile delinquency.

　　他是研究青少年犯罪的專家。

　　He had no history of delinquency.

　　他沒(méi)有違法記錄。

　　I am reluctant to trust anyone totally, Your Excellency

　　我不想完全相信任何人，閣下。

　　His excellency the President will be waiting for you in the hall.

　　總統(tǒng)閣下會(huì)在大廳等你。