He was suffering from disappointment and regret, grieving over what was, and wishing for what could never be.

他感到失望和懊恼，一边为过去的事伤心，一边又盼望那永远不可能的事。

youdao

Yes, they certainly have moments of elation, but it is not an exaggeration to say that most of the time they are in a state of fear, anger, frustration, anxiety, disappointment, betrayal, and regret.

是的，他们当然有兴高采烈的时候，但不夸张地说，大部分时间他们的感觉是恐惧、愤怒、灰心丧气、焦急、失望、背叛和后悔。

youdao

The disappointment and dreariness of TAO Yuan-ming was not only his Failing Ideality, but also his regret of son's no achievement.

陶渊明身后的失望、苍凉除了自己怀抱理想而无良辰佳时外，还应有诸子不立的憾恨。

youdao

Unfortunately, the word albatross has become a common term used within baseball and it will take a progressive owner to break the bad habits that have led to a consistent cycle of overpayment, disappointment and regret.

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"We sincerely apologize for the disappointment this unexpected change has caused and regret we were unable to provide you with the fun and memorable cruise vacation we had in store for you, " he wrote.

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