处理持续的技术问题可能是一段令人沮丧的经历。

Dealing with constant technical issues can be a ___frustrating experience.

看到钱那样浪费掉真是令人沮丧。

It's ___frustrating to see money going to waste like that.

当你匆忙时等公交车是令人沮丧的。

Waiting for the bus when you're in a hurry is ___frustrating.