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Quality is not something you can add on to a product or service. It must be built in from the beginning.
计算复杂性理论的发展向我们展示了并非所有问题都是平等的。
Silence speaks louder than words in the realm of art.
矿工的技能和奉献精神与他们带到地面的煤炭一样宝贵。