If we looked in 1950, this is the incidence of paralytic, or the worst form of poliomyelitis in the U.S.

让我们回首一九五零年,这表示的是在美国因脊髓灰质炎,所致瘫痪的发生率

耶鲁公开课 - 生物医学工程探索课程节选

So, polio--the disease caused by polio can be a paralytic disease, crippling, and in some cases can lead to death if the disease progresses in certain ways.

小儿麻痹症便是由脊髓灰质炎病毒引起的,如果脊髓灰质炎发展到一定程度,患者不仅会瘫痪或者残疾,一些病例甚至可能死亡

耶鲁公开课 - 生物医学工程探索课程节选