Tim, may I introduce you to my uncle's secretary, Mary Waller?

　　蒂姆，我可以把你介紹給我叔叔的秘書瑪麗·沃勒嗎？

　　"And now, without further ado, let me introduce our benefactor."

　　“現在，閑話少說，讓我來介紹一下我們的捐贈人。”

　　The film-makers will be present at the screenings to introduce their works.

　　電影制作人將在放映時到場介紹他們的.作品。

　　The government is having to introduce some difficult changes, particularly in moving over to a market economy.

　　政府將不得不引入一些艱難的變革，特別是在轉向市場經濟的過程中。