n. a feeling of dissatisfaction that results when your expectations are not realized
n. an act (or failure to act) that disappoints someone
n. 失望
1. I felt a deep disappointment when I didn't get the job I wanted.
当我没有得到我想要的工作时，我感到非常失望。
2. Her disappointment was clear when she saw the test results.
当她看到考试结果时，她的失望显而易见。
3. It's normal to feel disappointment after losing a game.
输掉比赛后感到失望是很正常的。