In the last several decades, our earth has been extremely polluted, such as air pollution, water pollution, noise pollution and so on.
在过去的几十年里，我们的地球已经极度污染，比如大气污染，水污染以及噪音污染等等。
In recent years, the extreme weather becomes more and more frequent. Winter gets colder and summer becomes hotter and it rains more frequently.
近几年，极地气候越来越频繁。冬天越来越暖，夏天越来越热，还经常下雨。
All of these warn us that protecting the environment is a serious and emergent event.
所有的这些都警示我们保护环境是一件严肃紧迫的事。

As our general people, we should build proper lifestyle. We should pay attention to water and light saving.
作为普通老百姓，我们应该形成合适的生活方式。
When we go out, we should firstly choose the public transportation.
我们应该注意节约水电。出门的时候我们应该首选公共交通。
The most important is that we must realize that we can do a lot of things to protect our environment.
最重要的是我们必须意识到我们可以做很多事情来保护我们的环境。
It's our duty to make our home better. Let's change from ourselves.
使我们的家园变得更美好是我们的责任。让我们从自己开始改变。