Pollution has become a serious problem all around the world.
污染已经成为一个全球性的严重问题。
Yes, I agree. We should try our best to protect the environment.
是的，我同意。我们应该尽最大的努力来保护环境。
What can we do?
我们能做什么？
We can plant more trees. I think our town will look nicer with more trees around.
我们可以种更多的树。我认为周围有了更多的树，我们的城镇会更美丽。
Good idea. Trees reduce dust and help keep the air clean. Air pollution is harmful to our health.
好主意。树木可以减少尘土，并帮助保持空气清新。大气污染对我们的健康有害。
Right. Trees also help keep soil in place during storms.
是的。树木可以帮助在沙尘暴中固定水土。
Yes. They provide home for animals too.
是的。他们也给动物们提供了住所。