期末考试不及格对我来说是一个令人非常失望的打击。

Failing the final exams was a ___bitter disappointment for me.

她通过令人失望的经历得知他不可信。

She learnt through ___bitter experience that he was not to be trusted.

现在，我已经从这个令人失望的经历中恢复过来了。

Now, I've already recovered from this ___bitter experience.