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簡單并非易事

一本書是通往其他生活和其他世界的窗口。

The principle goal of education is to create men who are capable of doing new things, not simply of repeating what other generations have done.

The only thing that can stop you is you.

可持續(xù)性不是一種選擇，而是我們星球未來的必需品。

你越是否認某件事，它就會引起越多的關(guān)注。