BBC在线收听下载:世界粮食署缺乏资金 无法给叙利亚难民提供援助

1.I was in Ferguson for much of last week, and it's absolutely clear that you have a police force presiding over a community where there is little trust between the two

preside over 主持；负责

At the moment it is being presided over by each member in turn.
那时, 每个成员轮流主持。

The PM presided over a meeting of his inner Cabinet.
首相主持了一次核心内阁会议。

2.The former British Prime Minister, Gordon Brown, has decided to step down next year after more than three decades as a Labour member of Parliament.

step down 辞职；走下；逐步减低

Judge Ito said that if his wife was called as a witness, he would step down as trial judge.
伊托法官说如果自己妻子被传为证人的话，他将辞去审判法官的职位。

I would step down if the people wanted.
如果人民有此愿望，我会辞职的。