熟悉,精通;[口语]熟悉;精通,擅长

be up in的用法和样例:

例句

  1. He must be an expert in his military duties.他还应熟悉其军事职责。
  2. This business is right up my alley.这种事情正是我熟悉的。

词汇搭配

  • be wrapped up in 被包在 ... 里...
  • be high up in the pictures取得成功