If you educate the public about dangerous diseases they can protect themselves, which will help to halt the spread.
如果你能教育公众如何来防治危险疾病,他们就能够保护好他们自己,从而阻止疾病的传播。
I spent the whole day in my room, but I did not write a single card!
我在房间里关了整整一天。然而竟连一张明信片也没写成!