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煤炭一直是工业的支柱,通过创新,它可以继续发挥作用。
释义:人生活在宇宙之间,就像蜗牛争斗、蚊虫追逐飞鸟一样微不足道。
A good mathematician is someone who can see analogies between theorems; a great mathematician is someone who can see analogies between analogies.