请输入您要查询的英文单词：
单词
knuckle
释义
knuckle
2
VERB
/ˈnʌkl/
PHRASAL VERBS
-
ˌknuckle ˈdown
PHRASAL VB
I
INFORMAL
to start working hard , especially when you should have done this earlier 开始努力工作（尤指早该如此）
-
ˌknuckle ˈunder
PHRASAL VB
I
INFORMAL
to do what someone tells you to do 听从；听命；屈服