討ㄊㄠˇtǎo便ㄆㄧㄢˊ宜ㄧˊpiányí

简讨便宜
tǎo piányiㄊㄠˇ ㄆㄧㄢˊ ˙ㄧ

  1. 謀取自身的利益或方便。例 「別討便宜又賣乖」。

英to look for a bargain, to seek advantage, to try to gain at expense of others