to ones disappointment

• adj. 使人失望的是

to ones disappointment的用法和样例：

例句

用作形容词 (adj.)

1. Frustratingly, it is very hard to tell.
   让人失望的是，这个问题很难回答。
2. Your decision comes as a great disappointment.
   您的决定真是很令人失望。