s. discouraging by hindering
s. preventing realization or attainment of a desire
a. 令人沮丧的
1. Learning a new language can be frustrating at times.
学习一门新语言有时会让人感到沮丧。
2. It was frustrating to wait for the bus in the rain.
在雨中等公交车真让人感到沮丧。
3. She found it frustrating when her computer kept freezing.
她发现电脑一直卡顿让人感到很沮丧。