BBC在线收听下载:无国界医生称抗蛇毒血清药不足

短语讲解：

1. The authorities on the Greek island of Lesbos are stepping up efforts to process those arriving there including chartering extra ships to the Greek mainland.

step up 走上; （使） 增加
例句：We must step up our vigilance.
我们一定要提高警惕。

2. In a warm night, orderly queues form in front of 12 tables, documents examined, papers handed out.
 
in front of 面前; 在…前面; 当着…的面
例句：A doctor has the title 'Dr' in front of his name.
医生的名字前有“Dr”这个称呼。
hand out 拿出; <非正>分发
例句：I rustle up a few helpers to hand out leaflets.
我找到几个助手散发传单。

3. Three ships are going back and forth between the island and Athens help as many as eight or ten thousand will be moved from Lesbos.

back and forth 来回地; 一来一往
例句：Two small boats ferry people back and forth.
两只小船往返为人摆渡。

4. Earlier,hundreds of migrants broke through Hungarian police line around a holding center near the border with Serbia and headed towards Budapest.

break through 攻破; 突围
例句：Demonstrators tried to break through the police cordon.
示威群众企图突破警察的封锁线。

5. David Cameron says the strike was carried out in self-defense. Jonathan Bill reports.

carry out 履行
例句：No matter what we do, we must carry out our duties.
无论干什么工作,我们都应履行自己的职责。

6. The international health charity Medecins Sans Frontieres has warned that death from snake bite are likely to rise as stocks of anti-venom run out.

run out 用完; 跑出去; 耗尽
例句：He is going the pace and his property will soon run out.
他生活奢侈，财富很快就会花光。