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我们有责任为子孙后代留下一个比我们发现时更好的地球。
We have a responsibility to future generations to leave the planet in better shape than we found it.
In a state, the liberty of one citizen is the liberty of all.
It's easier to stay out of trouble than it is to get out of trouble.
阅读的行为和写作的行为一样具有创造性。