know one's stuff

短语

精通自己的业务

词形变化

knew one's stuff knowing one's stuff known one's stuff knows one's stuff 三单 knows one's stuff knowing one's stuff 现在分词 knew one's stuff 过去式 known one's stuff 过去式 known one's stuff 过去分词

释义与例句

v.
  1. 1.

    To be knowledgeable about and competent at a particular subject or task.

    非正式 不及物

    Joe really knows his stuff when it comes to baseball.