VOA慢速英语:Experimental Ebola Treatments Bypassing Usual Regulatory Hurdles

短语讲解：

1. The disease has killed more than 4,500 people.

more than 多于
例句：Rob likes apples more than bananas. 
罗勃对苹果比对香蕉还喜欢。  
 
2. These drug trials usually involve thousands of people and can take many years to complete.

thousands of 数千的
例句：The game drew thousands of spectators. 
这场比赛吸引了数千名观众。 

3. That's just a study where you put a vaccine or treatment into a healthy human volunteer just to make sure that you know in normal, healthy people that your vaccine or drug does not cause any disease or serious adverse event," Geisbert said.

make sure 把事情弄清楚
例句：Make sure she eats nutritious food.
要确定她吃得很营养。

4. Researchers say, the promising vaccine will move into a more advanced human testing early next year.

move into 搬进…; 移入…; 搬家
例句：If you move into the house now, you have to pay 5000 yuan down. 
如果你现在搬进这座房子,你得先交5000元.