n.挫折；失败；令人沮丧的东西
It's healthier to release frustration than to bottle it up. 受挫折后发泄一通比强忍着对身体有益。
He ground his teeth together in frustration. 他因失败而把牙咬得咯咯响。
It's more of a frustration than anything else. 没有比这更令人沮丧的。
n.挫折；失败；坎坷
名词的frustration复数形式.
