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To every action there is always opposed an equal reaction； or， the mutual actions of two bodies upon each other are always equal， and directed to contrary parts.

"??????? ??? ?????? ???? ??? ?????? ?? ???? ?????? ?? ???????."

絕不是一種不理性的幻想：在未來的存在中，我們會把現在的存在視為一場夢。

The key to sustainable growth is balancing economic progress with environmental responsibility.

生存中最重要的工具不是刀或打火機。而是你求生的意志。