It might even cost up towards a percentage point of GDP every year for affected nations. If we invested about 13 billion dollars over the next four years, we could bring that incidence down to half.
可能多至国民生产总值百分之一。 如果我们投放大概一百三十亿美元，在未来四年用来控制疟疾， 就可以把感染的人数减半，