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There is no royal road to learning. 求知无坦途。 Doubt is the key to knowledge. 怀疑是知识的钥匙。 Sharp tools make good work. 工欲善其事，必先利其器。
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There is no royal road to learning. 求知无坦途。 Doubt is the key to knowledge. 怀疑是知识的钥匙。 Sharp tools make good work. 工欲善其事，必先利其器。
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