Feel out We need to feel out the landlord before asking him to lower the rent.Rick and his family wanted to feel out their new neighborhood before making a commitment to live there.Ross wanted to feel out his boss before asking for a raise.Definition: To find out what someone thinks about someone or something. This does not involve touching anyone.Etymology: This term alludes to physical groping. ***摸底You haven't even done something to feel him out and you agreed to marry him! What if he is a liar! 你都没有摸底就答应嫁给他了!他如果是骗子怎么办啊?Before applying for schools, I advise students to go to the campus to feel it out first before making the final pick! 申请学校的同学们,最好先去校园摸摸底再做选择.xxxxxxxxxxxxxxxxxxxxxxxxxxxx Achilles heel Stanley's Achilles heel is women.Melanie's Achilles heel is spelling and grammar.Ben's Achilles heel is his inability to keep his cool.Definition: An Achilles heel is a deadly weakness in spite of overall strength, which can actually or potentially lead to a downfall.Etymology: In Greek mythology, when Achilles was a baby, it was foretold that he would die young. To prevent his death, his mother Thetis took Achilles to the River Styx, which was supposed to offer powers of invulnerability, and dipped his body into the water. But as Thetis held Achilles by the heel, his heel was not washed over by the water of the magical river. Achilles grew up to be a man of war who survived many great battles. But one day, a poisonous arrow, shot at him by Paris of Troy, was lodged in his heel killing him shortly after.***死穴 致命要害 致命弱点 He speaks perfect Mandarin, almost as good as a native speaker. But the four tones of the language are his Achilles heel, it betrays him from time to time. 他中文特别好,说得几乎像母语那样流利,不过四声是他的死穴,会时常出卖他.He is a very popular young politician who has a promising future, but alcohol is his Achilles heel. 他是个年轻有前途的政客,但嗜酒是他致命的弱点.