WorldHealthDay 世界地球日 World Earth Day

世界地球日 World Earth Day  

,The pollution is happening everywhere. For example, the river in my hometown, when I was very small, people could wash their clothes and go swimming in it, or we could see fish clearly. But now, the water is very dirty and there are a lot of rubbish around the river. What’ more, the area of river has bee smaller. Every time when I see this bad change, I feel so pity.