慢速英语:New Rotavirus Vaccine Could Save Thousands of Children

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短语讲解：

1.The new vaccine is important because rotavirus is a serious illness that can lead to death.

lead to 导致; 把…带到
例句：Economic models often lead to the study of systems of equations.
经济模型经常导致对方程组的研究。

2.They must also be kept cold. In many African countries where people suffer from rotavirus, refrigeration and electricity are unreliable.

suffer from 患（某种病），受（某种病痛）折磨
例句：Many kids suffer from acne and angst.
许多年轻人都会受到青春痘和焦虑的困扰。

3.In other words, those babies were given a placebo.

in other words 换句话说; 就是说
例句：In other words, menus provide a pedagogic vector.
换句话说，菜单是一条学习的途径。

4.But we know that all vaccines do not work very well in African countries for reasons that are still unclear, probably due to immunological disorders.

due to 由于; 因为
例句：Unfortunately, due to unforeseen circumstances, this year's show has been cancelled
遗憾的是，由于一些意外情况，今年的演出被取消了。

5.The vaccine is expected to cost $6 for the three doses.

be expected to 被期待做某事; 有望做某事; 期许
例句：I shall be expected to shell out the money for the party.
我将要支付这个集会的费用。