正文

VOA慢速英语:Is There a Deadly Polio Virus Hiding Somewhere?

2014-09-10来源:VOA

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短语讲解：

1. The study says a mutated polio virus was responsible for that unusually deadly outbreak.

be responsible for 为…负责，形成…的原因; 主管
例句：You'll be responsible for anything wrong.
出了事唯你是问。

2. He blames Congo’s civil unrest in the 1990s and early 2000s that had messed up vaccination campaigns.

mess up 弄乱，弄糟
例句：They told us not to mess up the room.
他们告诉我们不要把房间弄脏。

3. What happened in Congo was, it hadn’t been used for quite a long period of time and a susceptible group opened up.

open up 开发; 打开
例句：They decided to open up an office in town.
他们决定在市区设立一个办事处。

4. Then, he says, talk about mutant strains or stronger vaccines would be unnecessary.

talk about 谈论
例句：He went on to talk about his accident.
他接着谈到了他的意外事故。