BBC在线收听下载:投资者担忧新兴经济 亚洲股市继续下跌

短语讲解：

1. But now, a new and welcome boost in the shape of Sarah Palin.

in the shape of 以…形式
例句：This island is in the shape of a cross.
该岛呈十字形。

2. The Colombian government and the country's largest rebel group the FARC areasking the United Nations to oversee the implementation of any ceasefire thetwo parties agree to end more than 50 years of conflict

agree to 同意， 赞成
例句：We cannot agree to consign the goods.
我们不同意寄售此货。

3. And four thousand years ago, someone came up with an earlyversion of Beauty and the Beast.

come up with 想出; 提出; 追赶上
例句：Slow down a bit and let me come up with you.
跑慢一点让我赶上吧。