1、be disappointed in sb/sth对某人〔某事〕失望
2、be disappointed in love失恋
3、结果是会令人失望的。
4、The result was disappointing.
5、disappoint偶尔也可用作不及物动词,意思是“令人失望”。
6、They were disappointed at the result.
7、be disappointed in new teacher对新老师感到失望