BBC在线收听下载:伊拉克首都发生自杀式爆炸袭击

短语讲解：

1. At least 37 people have died and more than 50 are injured.

at least 至少
例句：Read at least 30 books.
至少读30本书。

2. Officers say Mr. Khan is the first special forces commander to switch sides joining the Heze-e-Islamic organization which carries out attacks on the Afghan government and Nato-led forces.

carry out 执行；进行
例句：They should also carry out some fundamental reforms.
这些政府也应该执行一些基础性的改革。

3. The widow of former President Tito of Yugoslavia, Jovanka Broz has died in Belgrade at the age of 88.

die in 在（某事中或在某地方）死去
例句：Did someone die in here?
有人在这里死了吗？