VOA慢速英语:Batteries That Last Forever Could Be Near

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. theory n.理论; 原理; 学说
例句：This is standard matrix theory.
这是规范的矩阵理论。

3. evidence n.证据; 迹象; 证词
例句：Her being there had the character of ugly evidence produced in court.
她在那出现的本身就是提交给法庭的一种罪证。

4. discovery n.发现，发觉
例句：The discovery is due to Newton.
该发现应归功于牛顿。