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It really matters whether people are working on generating clean energy or improving transportation or making the Internet work better and all those things. And small groups of people can have a really huge impact.

建筑不僅僅是一個所在之處，更是一種觀看的方式。

解釋：所謂把糧食積存在取之不盡的糧倉里，就是要努力從事糧食生產。