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  1. study up

    • ph.
      用功準備考試
    • 釋義
    • ph.
      片語
    • 1. 用功準備考試

      I know very well about the matter because I had studied it up in a book. 那件是我很熟悉因為我曾在一本書中讀到過。

  2. 知識+