1-draw a blank 束手无策，一无所获

The African American boy was just 15 years old when he was presenred in St. Louis city hospital, the medical team drew a blank.

2-afford 给与，提供

The findings placed the arrival of Aids in the US, and afforded Rayford a place in the history of the retrovirus that has since killed more than 35 million people worldwide.

3-inherent 固有的，与生俱来的

The difficulty and expense inherent in these methods has led some to argue that the money spent on cure research would be better used on providing antiretroviral therapy to the 15 million people who don't yet have access to it.

4-epidemic 流行病

5-rage 肆虐

It is in poorer countries that the epidemic still rages fiercely.

6-shatter 粉碎，严重破坏

7-hamstring 使……无能为力，使……陷入瘫痪

In 2017，around one million people died of Aids-related illnesses, shattering families and hamstringing the economic potential of nations.