Not believing in force is the same as not believing in gravity.
不相信力和不相信重力是一样的。
-- Leon Trotsky 托洛茨基
Not believing in force is the same as not believing in gravity.
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Not believing in force is the same as not believing in gravity.
不相信力和不相信重力是一样的。
-- Leon Trotsky 托洛茨基
