disappointment

He couldn't hide his disappointment when he found out he didn't get the promotion he wanted.

(Chinese) 当发现自己没有得到想要的晋升时，他无法掩饰内心的失望。

To my great disappointment, the restaurant was already closed by the time we arrived.

(Chinese) 令我非常失望的是，当我们到达时，餐馆已经关门了。