to know well

• 熟悉情况

  familiar with the situation

• 熟悉地形

  familiar with the lie of the land

• 熟悉马克思主义

  well versed in Marxism

• 事事都熟悉

  familiar with everything

• 应当首先熟悉一下情况

  should familiarize oneself with the situation first

• 厂里的事他暂时还不熟悉。

  He is still unfamiliar with the workings of the factory.