VOA慢速英语:To Fight Malaria, Bed Nets Are the Most Important Weapon

短语讲解：

1. A parasite called plasmodium is responsible for the spread of malaria.

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

2. The U.N.’s World Health Organization carried out the study on malaria infection in five countries: Benin, Cameroon, Kenya, Sudan and India.

carry out 进行; 执行; 完成
例句：The Social Democrats could still carry out their threat to leave the government
社会民主党人仍有可能将其退出政府的威胁付诸实施。

3. And she adds, health workers should “make sure that everybody who’s living in at-risk areas is sleeping under a net and using the net correctly.

make sure 把事情弄清楚，核实或查明某事物
例句：I'll have to make sure I'm not chased.
我一定想办法不叫他们发现。

4. So even if they don’t die immediately, the searching process would mean that eventually they may die.

even if 哪怕; 虽然; 即使，纵然
例句：One cannot but admire her even if one may not like her.
你即使不喜欢她也只得佩服她。

5. They say that step reduced infections by an additional 50 percent, compared with using only long-lasting insecticidal nets.

compare with 比较; （把…） 与…相比
例句：My English cannot compare with his.
我的英语不及他。