VOA慢速英语:US, Allies Weigh Iran Nuclear Deal

短语讲解：

1. In it, Mr. Obama told CBS News that Iran has negotiated seriously because of what he called some of the strongest economic restrictions, or sanctions, ever put in place.

because of 因为，由于
例句：I'm here because of you.
我来这儿是因为你们。

2. She was cared for at the same hospital where Ambassador Lippert is being treated.

care for 喜欢; 照料; 愿意
例句：As for me, I don' t care for tea. 
就我来说，我是不喜欢喝茶的。 

3. Activists say airstrikes carried out by U.S.-led coalition forces hit an oil refinery in northern Syria on Sunday.

carry out 履行
例句：No matter what we do, we must carry out our duties. 
无论干什么工作,我们都应履行自己的职责. 

4. Elections had been set for last month but have been delayed until March 28 because of the violence.

set for 为…而安排
例句：The scene is set for the drama. 
戏剧的布景已经装好。