1. frustrate vt.挫败; 阻挠; 使受挫折
例句:This is the place that we frustrate enemy.
这是我们挫败敌人的地方。
2. discover vt. 发现; 碰见
例句:The fact is that he did not discover it.
事实是他没有发现它。
3. express vt.表达; 表示; 显而易见
例句:The writer wishes to express his appreciation for the aid received.
作者对于受到的帮助谨致谢忱。
4. opportunity n.机会; 适当的时机良机
例句:He is waiting for his opportunity.
他在等待机会。
5. realize vt.实现; 了解,意识到
例句:I do not realize that offends him.
我没有意识到已经冒犯他了。
6. pronounce vt.宣布,宣称; 演讲
例句:Only an expert should pronounce on the case.
只有专家才能对这件事发表意见。