VOA慢速英语:Science in the News – Aspirin Helps Many Medical Problems

短语讲解：

1. Scientists say aspirin prevents blood cells called platelets from sticking together to form clots.

prevent from 阻止， 防止
例句：China is willing to wage war with taiwan to prevent from declaring independence-whatever the cost.
中国不惜一切代价去阻止台湾独立，包括发动战争。

2. But it was years before large studies took place.

take place 发生,进行
例句：Where were you? Where did it take place?
你当时在哪儿?在哪儿发生的?

3. Aspirin thins the blood, so the blood may be able to flow past the blockage.

be able to 能够
例句：We hope you'll be able to attend.
我们希望你能够前来参加。

4. It also includes ibuprofen, the active substance in products such as Advil.

such as 例如,诸如
例句：Such as vegetables, flowers, birds and insects.
如蔬菜、花、鸟、昆虫。

5. This time, he and other researchers found that taking a small aspirin once a day reduced death rates from a number of common cancers.

a number of 许多的；一些
例句：A number of drawbacks come to mind.
下面就是一些不好的方面。

6. It limits their ability to see objects directly in front of them.

in front of 在…前面；当着…的面；面前
例句：She busted me in front of my parents.
她在我的父母面前贬低我。