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都是出卖,卖给中原各国也可以,何必非要卖给越国呢? 
当我们真正关注任何事物时,即使是一片草叶,它也会变成一个神秘、令人敬畏、无法形容的壮丽世界。
Science is about understanding the world, and medicine is about applying that understanding to help people.