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两个物体的相互作用力总是大小相等,方向相反,同时出现或消失且作用于同一直线上。
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.
"The universe is not only stranger than we imagine, it is stranger than we can imagine."
Overfishing is a solvable problem, but it requires global commitment and local action.
The future belongs to those who can make leather without leaving scars—on the earth or its people.
I get to play golf for a living. What more can you ask for - getting paid for doing what you love.