There's a cheat you can use to get to the next level.

　　有種秘技，你可以用來到達下一關。

　　Philosophers did not use to make a distinction between arts and science.

　　哲學家過去習慣不把藝術和科學區別開來。

　　I didn't use to like opera but my husband has converted me.

　　我過去不喜歡歌劇，但我丈夫改變了我。

　　I'm sorry, I've been no use to you.

　　對不起，我一點兒忙也沒幫上。

　　The contents of this booklet should be of use to all students

　　這本小冊子的內容應該會對所有的學生都有用處。