BBC在线收听下载:伊拉克反叛武装ISIS领袖发布首个视频片段

短语讲解：

1. The first video footage of the man believed to be the leader of the ISIS, the militant group which has taken control of large part of Syria and Iraq.

take control of 控制
例句：You let him take control of an airplane?
你让他自己驾驶一架飞机?

2. You've good, propose for a good question because certainly the man who appears in this video is rather different from the couple of the rather grainy still images that we've had of him up to now and which he’d appeared somewhat scrappy unshaven figure.

be different from 与…不同; 不同于
例句：May your destiny be different from her.
希望你的命运和她不同。

3. So as you say, after about 24 hours or so in which a number of fairly vague rumors about his possibly having been injured or killed in some kind of military operation have been circulating here in rather glorious technicolor would've appeared to be the ISIS response.

a number of 许多的; 一些
例句：A number of drawbacks come to mind.
下面就是一些不好的方面。