By using the right methods, we can get "twice the result with half the effort"; that is, we can save time, use less effort, and achieve better results.

For example, in summer set the air conditioner temperature a bit higher, and remember to turn off the air conditioner and the computer when you go out; drive less and ride a bike or take the subway and buses, which can reduce air pollution; also develop the habit of throwing trash into trash bins, and so on.

Each of us has a responsibility to protect the environment, therefore, please use plastic bags sparingly, or bring your own shopping bag when shopping, or even refuse to use plastic bags.

This solution is good. It not only makes communication convenient for everyone but also saves paper and protects the environment. But if everyone else can see my diary, how unsafe would that be!

Actually, the purpose is quite simple: to remind people to save electricity and to draw people's attention to the issue of global warming.