博文集
在等待实现愿望的时候,愉快地生活在当下---
Thursday, January 8, 2009
能量守恒定律
能量总是遵守着一定的规律,当动能减弱的同时势能在逐渐增强--
人的一辈子也是这样,当你前半辈子懒惰,后半辈子注定要辛苦还上--
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