low-down

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++ˈlow-down adjective [only before noun] informal  DISHONESTdishonest and unkind 卑劣的，卑鄙的 What a low-down, dirty trick. 多么卑劣肮脏的勾当。

ˈlow-down adjectiveChineseSyllable  

low-down
ˈlow-down adjective [only before noun] informal
dishonest and unkind:
    What a low-down, dirty trick.