英语自学网 发表于 2016-8-12 16:22:18

Know one‘s beans

  Know one‘s beans
       
          熟悉(精通)自己的业务
       
          例句:
       
          Though she is very clumsy at doing housework, she knows her eans in working.
       
          虽然她在做家务方面笨手笨脚的,在工作方面却很精通。
       
          
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