BBC在线收听下载:美民主党议员静坐 抗议控枪“不作为”

短语讲解：

1. The Pakistani Taliban says it carried out the attack.

carry out 进行; 执行; 完成
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. The audio was made public ahead of general elections on Sunday, which Mr Diaz's party is expected to win.

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。