BBC在线收听下载:利比里亚最后一名埃博拉患者出院

短语讲解：

1. The World Health Organisation points out the virus was able to move between their poorest borders when the outbreak began, and it warns that could happen again if people let down their guard.

be able to v.能，会; 能够
例句：People will be able to plan responsibly.
人们将能够负责任地进行规划。

2. U.N. Envoy to Syria has suggested that he will be prepared to negotiate with the al-Nusra Front as part of his effort to secure a temporary truce in Aleppo.

negotiate with （就某事）与…进行交涉（以达成协议）
例句：We've decided to negotiate with the employers about our wage claims. 
我们已经决定和雇主谈判关于我们的工资要求。 

3. His comments come amid reports that al-Nusra Front is considering cutting ties with Al-Qaeda to pave the way for funds and arms from the Gulf state of Qatar, which, like the West, is struggling to find a strong ally in the fight against the so-called Islamic State, as well as President Assad's forces.

as well as 也，又
例句：Let' s share in our troubles as well as in our joys. 
让我们同甘共苦吧。 

4. At least 45 people in northeastern Nigeria have been killed by suspected Boko Haram militants.

at least 至少
例句：At least that's the theory.
至少理论上是这样。