be disappointed;be discouraged;lose hope;lose confidence;despair 他们对比赛结果极为～。They were bitterly disappointed at the result of the game./他未被选中火炬手感到很～。He was very disappointed not to be chosen as a torchbearer./他对朋友彻底～了。He lost all hopes in his friend./对前途悲观～be pessimistic (or despondent)about one’s future