NPR News:剑桥分析被曝干涉英国脱欧 扎克伯格拒绝到英议会作证

重点讲解：
1. be prepared to do sth. 愿意（做…）的；
例句：You can find out whether they are prepared to share the cost of the flowers with you.
你可以弄清楚他们是否愿意和你一起分担买花的费用。
2. as long as 只要；
例句：As long as I deliver the goods, my boss is very happy.
只要我做好本职工作，我的老板就很高兴。
3. shut off 关闭；关上；使停止运转；
例句：They pulled over and shut off the engine.
他们靠边停车熄火。
4. what if (用于疑问句句首，尤用于询问不希望看到的事发生时的结果)如果…怎么办；
例句：What if he got a guilty conscience and brought it back?
要是他觉得内疚，把东西拿回来了怎么办？