BBC在线收听下载:奥巴马下令彻查“黑客干预大选”

短语讲解：

1. The military in Nigeria says at least 30 people have been killed in a suspected Islamist attack in the northeastern town of Madaghali.

at least 至少
例句：They will receive their awards at a ceremony in Stockholm
他们会在斯德哥尔摩举行的仪式上接受颁奖。

2. The UN human rights office says it received reports that hundreds of Syrian man have gone missing after crossing into government controlled west Aleppo.

hundreds of 好几百，许许多多
例句：Hundreds of office buildings and homes developed large cracks in walls and ceilings.
数百栋写字楼和住宅楼的墙壁和天花板上都出现了裂缝。