BBC在线收听下载:美国总统奥巴马称加大打击伊斯兰国的力度

短语讲解：

1. Speaking at the Pentagon, Mr. Obama said the US had killed a number of the group's leaders.

a number of 一些; 许多的
例句：The vibrating object has executed a number of oscillations.
物体已经完成了许多次振动。

2. The government of Colombia and FARC rebels have announced that they reached agreement on one of the most sensitive issues in the 3-year peace talks taking place in Havana.

take place 发生
例句：Earthquakes take place far underground.
地震则发生在地球的极深处。

3. It was according to his lawyer, and an intentional bit to 'assassinate' his character for financial gain.

according to 根据
例句：According to her, grandfather called at noon.
据她说,祖父在中午打来电话。

4. The ceasefire is due to last for 7 days to coincide with peace talks at a secrete location in Switzerland.

due to 由于
例句：The team's success was largely due to her efforts.
该队的成功在很大程度上是由于她的努力。

5. The authorities promise to bring in regulation in response to concerns over privacy and security.

in response to 对…做出反应
例句：He opened the door in response to a knock.
他应敲门声而开了门。