本集核心英语单词及例句：

1.situation (n.)情况；形势；处境
Seeing such a situation, I had to step in.
看到这种情况，我不得不出来解围了。

2.powerful (adj.)强大的；强有力的
The essay is most penetrating and powerful.
这篇杂文极为深刻有力。

3.incredible (adj.)难以置信的，惊人的
It sounded incredible in common.
乍一听来，简直不可思议。

4.academic (adj.)学术的；理论的
This is not merely an academic question.
这不仅仅是一个学术问题。

5.performance (n.)性能；绩效
With this as our performance objective, we set up a series of tests.
把这作为我们的性能目标，我们将进行一系列的测试。