破坏25个还未孵化的受感染水塔。
When treated with the enhanced titanium dioxide, this highly infected water became virus-free.使二氧化钛加强处理时,这一高度感染的水成为无病毒河流。
Meanwhile, 30 students were chosen as recorders to record their family members' time length of contacting infected water each day.同时选择30名学生作为记录员,记录各自家庭成员每天接触疫水的时间。