BBC在线收听下载:考古发现中国人5000年前就会酿啤酒

短语讲解：

1. The operation to evacuate Greece's biggest informal refugee camp began at dawn, and is expected to take at least a week.

be expected to 被期待做某事; 有望做某事; 期许
例句：Teachers can only be expected to do what is reasonable and practicable.
教师只应该做合情合理而且切实可行的事。
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. President Obama has set out his plan for a stronger relationship with Vietnam, a day after lifting a ban on arms sales that was the last big hurdle between the two countries.

set out 出发; 着手; 动身
例句：He set out to conquer the literary world of London.
他决心赢得伦敦文学界的赞誉。

3. It'd allow us to account for the missing, and finally bring them home.

account for 说明（原因、理由等）; 导致
例句：I can' t account for Peter' s un happiness.
我说不出彼得不高兴的原因。

4. Police said protesters threw missiles and set up burning barricades.

set up 建立; 准备; 安排; 引起
例句：They set up many branches throughout the country.
他们在全国建立好多分公司。

5. I am going to ask for leave from the Ministry until the Public Ministry makes its declaration.

ask for 请求…; 要求…; 找…; 自找麻烦
例句：He ask for leave of absence to visit his mother in hospital.
他请假去探望住院的母亲。