frustrate
[frʌs'treit]
vt.挫败, 击败, 使沮丧, 使灰心
adj.无益的, 挫败的, 挫折的
例句与用法：
The terrible weather frustrated our hopes of going out.
恶劣的天气使我们外出的愿望无法实现。
I'm feeling rather frustrated in my present job; I need a change.
我感到现在干得很不顺心，需要换一换工作。
词形变化：
副词: frustratingly | 名词: frustrater | 动词过去式: frustrated | 动词过去分词: frustrated | 动词现在分词: frustrating | 动词第三人称单数: frustrates |
详细释义：
vt.
1. 挫败; 阻挠; 使感到灰心
They made their preparations to frustrate the conspiracy.
他们作好准备挫败这个阴谋。
He was frustrated by repeated failures.
他因一再失败而灰心丧气。
2. 使无效
a.
1. 受挫的; 失望的
2. 无益的, 无效的
The prisoner made a frustrate attempt to escape.
囚犯妄图逃跑。