BBC在线收听下载:奥巴马访问枪击案受害者家属

短语讲解：

1. Earlier, activists said government warplanes, for the first time, fired rockets at a Palestinian refugee camp in Damascus, killing at least 15 people.

at least 至少
例句：At least two yeas of experience.
至少有两年的经验。

2. Witnesses told local television that a number of explosions were heardnear a bar close to a mosque in the eastleigh district, and that grenades have been thrown from a speeding vehicle.

a number of 一些
例句：There are a number of negroes in the city.
这个城市有一些黑人。
close to 靠近
例句：The ship kept close to the coast.
那条船靠近海岸航行。

3. Prosecutors in Paraguay have filed charges against a group of peasants allegedly involved in a land dispute which resulted in the killing of 17 people.

involve in 卷入
例句：Be you involve in the copyright affair.
你是否卷入著作权的事件之中。

4. One of the most hotly contested sports award ceremonies ever to be held in Britain is taking place this evening in London.

take place 发生
例句：Where were you? Where did it take place?
你当时在哪儿?在哪儿发生的?