承认失败to admit defeat

• 不在困难面前认输

  not admit defeat when faced with difficulty

• 我认输了。

  I give up.

• 我们决不认输。

  We will never throw in the towel.

• 骗子们总是要在事实面前认输的。

  Swindlers will always have to admit defeat in the face of the truth.

【棋】to resign