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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.

Sustainable forestry is not an option; it's an obligation.

文學是靈魂的食糧，它滋養我們并讓我們成長。

In science, we must be open to the possibility that our most cherished theories could be wrong.

最重要的事情是愿意質疑一切。