BBC在线收听下载:奥巴马呼吁加大力度限制核武器扩散

短语讲解：

1. In one of the most serious attacks on the UN in Somalia for years, at least four foreign UN security staff and four local guards were killed along with a number of civilians and militants.

at least 至少
例句：Can we at least try?
我们至少试试看吧？

2. They finally hoped to extinguish it by dumping massive amounts of water from the air.

amounts of 不可数名词 大量的
例句：The amounts of money involved also are unclear.
目前尚不清楚涉案金额的具体数量。

3. The depot, 1,000km southeast of Moscow, housed some 18 million shells as well as small arms ammunition.

as well as 也，又
例句：Your mental as well as physical health in that space.
你的精神以及身体健康的空间。

4. Prosecutors say the group had set up a branch of the Muslim Brotherhood, which came to power in Egypt after a popular uprising in 2011.

set up  安排；引起
例句：You set up the deal!
整桩生意是你一手安排的!

5. Mr Berlusconi's lawyers say his trial was mishandled that it should have been held up on one particular day because he was busy with crucial government affairs and couldn't attend.

hold up 举起；支撑
例句：How do you think he will hold up?
你觉得他能撑下去吗？