BBC在线收听下载:意大利发生强震 三座城镇被夷为平地

短语讲解：

1. It isn't yet clear who carried out the attack.

carry out 进行; 执行; 完成; 抬出去
例句：No matter what we do, we must carry out our duties.
无论干什么工作,我们都应履行自己的职责。

2. Officials delayed their return journey because they were waiting for cheaper flights to become available.

wait for 等待
例句：Mysticism has not the patience to wait for God's revelation.
神秘主义没有耐心以等待上帝的启示。

3. French officials say a cold and stormy spring followed by a summer drought are expected to push wine production down by almost 10 percent this year compared with last.

be expected to 被期待做某事; 有望做某事
例句：I shall be expected to shell out the money for the party.
我将要支付这个集会的费用。
compare with 比较; （把…） 与…相比
例句：How does your new house compare with your old one?
你的新房子和旧房子比起来怎么样?