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The most sustainable product is the one that lasts a lifetime.

我們唯一需要恐懼的就是恐懼本身。

I have always considered that the true test of a machine is its practical utility in the hands of the common laborer.

Stray birds of summer come to my window to sing and fly away。 And yellow leaves of autumn， which have no songs， flutter and fall there with a sigh。