We should spare no effort to beautify our environment, because it is shared by all the human beings.
我们应不遗余力地美化我们的环境，因为它是全人类共有的。
We should spare no effort to beautify our environment.
我们应该不遗余力地美化我们的环境。
We should spare not no effort to beautify our environment.
咱们应该不遗余力的美化咱们的环境。
We should spare not no effort to beautify our environment.
咱们应该不遗余力的美化咱们的环境。
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