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水杯为什么会静止在桌面上？

 6 years ago
source link: https://www.v2ex.com/t/494334
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问与答 - @AlterO - 马克思说世界是由物质组成的，而物质是运动的。那就目前而已，以一水杯为例水杯，微观上讲，水杯是由分子组成，既然分子无时无刻不在运动着，那为什么水杯会静止在桌面不动？

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