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

短语讲解：

1. It says America “is not yet prepared for a truly catastrophic disaster.”

prepare for (使)为…作准备
例句：Every day they are talking about peace but actually preparing for war.
他们每天都在谈论和平, 但实际上却在准备战争。

2. Congress asked the commission to investigate the September eleventh attacks and to make proposals for guarding against future attacks.

guard against避免, 预防
例句：We must guard against accidents.
我们必须谨防事故。

3. The new report noted that nine of the reforms proposed by the commission have either been carried out ineffectively or completely ignored.

carry out执行; 贯彻
例句：He carried out the plan in very detail.
他一丝不苟地执行那项计划。

4. For example, much-needed radio frequencies have not yet been allotted to first responders to allow them to communicate effectively in a crisis ... an issue that I worked on for many years in the Senate and is long overdue for completion.

work on致力于…
例句：He has been working on a new novel for over a year now.
近一年多来, 他一直在写一部新小说。

5. Officials said this lack of communication led to needless loss of life.

lead to导致, 引起
例句：An ordinary cold can soon lead to a fever.
一场普通的感冒很快便会引起高烧。

6. It says such a system may have helped officials find two of the hijackers involved in the 9-11 attacks.

involve in使参与〔陷入, 牵扯到〕
例句：The vast masses there have become involved in the health campaign.
那里的广大群众都参加了卫生运动。