BBC在线收听下载:“卡特里娜”飓风10周年 奥巴马访问新奥尔良

短语讲解：

1. One unconfirmed report says there are at least 100 bodies at a hospital in Zuwara including nationals from Syria, Bangladesh and several sub-Sahara African countries.

at least 至少
例句：In fact it requires at least n generators.
事实上，它至少要有n个元素。

2. And so, like a body weakened, when the storm hit, there’s no resources to fall back on.

fall back on 求助于，依赖，转而依靠
例句：We had to fall back on the notes collected by students during the course of his lectures.
我们只好求助于学生们在他讲课时所记的笔记。

3. Eric Laurent and Catherine Graciet are alleged to have asked for more than three million dollars not to publish a book said to contain compromising information reportedly about the king.

ask for 要求
例句：He had the audacity to ask for an increase in salary.
他竟然厚着脸皮要求增加薪水。

4. Discussions will focus on Syria, Yemen and what the White House said were Iran’s destabilizing activities in the Middle East.

focus on 致力于; 使聚焦于
例句：We must focus on increasing our home markets.
我们必须把注意力放在拓宽国内市场上。