go the knuckle fight with the fists. Australian informal
near the knuckle verging on the indecent or offensive. British informal
☞ In the late 19th century this expression was used more generally to mean 'close to the permitted limit of behaviour'.
rap someone on the knuckles: seerap.
英语词组固定搭配大全包含15956条英汉双解词组，基本涵盖了全部常用英文词组、短语的翻译及用法，是英语学习的有利工具。