clue：[kluː] n.线索，情节
We have no clue as to where she went after she left home.
我们对她离家後去往何处毫无线索。

clue on 　v.提示
If you were listening, she probably told you more than enough about herself to give you a clue on her likes and dislikes.
如果你听进去了，也许她暗示过你很多她喜欢的和不喜欢的东西，多过她想告诉你的。

clue in向某人提供情况； 提示
He had been puzzling all day for the answer to the last clue in the crossword.
他整整一天都在为能解答纵横填字的最后一个迷而苦思，

clueless： ['kluləs] adj. 无线索的；愚蠢的
The clueless ones do dumb things like pay too much for acquisitions in an effort to plumpearnings per share.
愚蠢的人会做一些无知的事情，比如为了增加每股收益而在收购方面耗费过多。

欢迎关注微信公众平台edenenglish。