BBC news 2009-07-25 加文本

1.He made his decision after receiving a direct order from the Iranian Supreme Leader Ayatollah Ali Khamenei.

make a decision作决定

例句：The government will discuss these matters today and make a decision shortly.
      政府今天要讨论这些事情，然后即刻作出决定。

2.The arrest under president’s criticism of the police set off a heated debate on race which Mr. Obama says show the sensitivity of black people to such incidents.

set off 引起

例句：This question set off a fierce debate.
      就这个问题掀起了一场激烈的辩论。

3.Because this has been ratcheting up, and I obviously helped to contribute ratcheting it up.

ratchet up推进，扩大

例句：electricity prices will ratchet up this year
      今年电价将升高

4.I want to make clear that in my choice of words, I think I unfortunately gave an impression that I was maligning the Cambridge Police Department or Sergeant Crowley specifically.

make clear that明确表示

例句：We have make it clear that agriculture is the foundation of the national economy.
      我们已经讲明农业是国民经济的基础。