VOA慢速英语:How Technology Has, and Has Not, Changed Since 9-11

词汇讲解：

1. hijack vt.劫持, 绑架
例句：The plane was hijacked soon after it took off.
那架飞机起飞后不久被劫持了。

2. intelligence n. 情报, 消息
例句：The general had secret intelligence of the enemy.
将军掌握了有关敌人的秘密情报。

3. catastrophic adj. 灾难性的；惨重的;悲惨的
例句：Because Europe has gone through two catastrophic world wars.
因为欧洲经历了两次世界大战的灾难。

4. investigate vt. 调查; 审查
例句：The police are investigating the murder.
警察在调查那起凶杀案件。

5. ignore vt. 不顾,不理会;忽视
例句：His letters were ignored.
他的信无人理会。

6. allot vt. 分配，配给（时间、钱财等）；分派（任务等）；拨给；摊派
例句：Each passenger slept on the berth allotted to him.
每个旅客都睡在分配给他的铺位上。

7. overdue adj. 迟到的; 延误的
例句：The plane is overdue and has been delayed by the bad weather.
飞机晚点了, 被坏天气耽搁了。

8. needless adj. 不必要的;不需要的
例句：A third car was a needless expense.
买第三辆汽车是一笔不必要的开支。

9. praise vt.称赞, 赞赏；赞美; 颂扬; 崇拜
例句：He was praised for his neat and careful work.
他因工作认真、利索而受到赞扬。

10. sophisticated adj. 精密的, 尖端的,复杂巧妙的,先进的
例句：This is a very sophisticated machine.
这是一台非常精密的机器。