true situation

• 事实的真相

  the truth

• 残酷的真相

  harsh truth

• 不明全部真相

  fail to understand the whole truth

• 真相不明。

  The real situation is not known.

• 真相大白。

  The cat is out of the bag.

• 揭穿事件的真相

  reveal the truth of the matter