洗手是预防和防止传染病蔓延的有效方法，你知道多洗手可以换回多少的生命吗？
The experts say that hand washing is especially important before and after preparing food, before eating and after using the toilet. People should wash their hands after handling animals or animal waste, and after cleaning a baby. The experts say it is also a good idea to wash your hands after handl…