重点讲解:
1. cancel out 抵消;
He wonders if the different influences might not cancel each other out.
他在想,各种影响能不能相互抵消 。
2. block out 挡住,遮挡;
Thick chipboard across the window frames blocked out the daylight.
装在窗框上的厚厚的胶合板挡住了白天的光线 。
3. come in handy 派上用场;
That key will come in handy if you lock yourself out.
要是你把自己锁在了屋外,那把钥匙就派上用场了 。
4. do the trick 奏效;达到目的;
I don't know what it was that did the trick, but I am definitely feeling much better.
我不知道是什么起的作用,但是我确实觉得好多了 。
n. 原则,原理,主义,信念