對症發藥 [ㄉㄨㄟˋ ㄓㄥˋ ㄈㄚ ㄧㄠˋ; dui4 zheng4 fa1 yao4] lit. to prescribe the right medicine for an illness (idiom); fig. to study a problem to find the right way to solve it to take appropriate steps ◄ ►