◎渔利yúlì
[reap unfair gains;profit at other' expense] 用不正当的手段谋取利益
渔利是一个汉语词语，意思是用不正当的手段谋取利益。
◎投机tóujī
(1) [congenial;agreeable]∶见解相同
话不投机
谈得投机
(2) [speculate;seize every chance to gain advantage by trickey]∶利用时机谋取私利