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Children's need for activity is almost stronger than their need for food.
儿童对活动的需要几乎比食物的需要更为强烈。
Order and simplification are the first steps toward the mastery of a subject.
Hard work and dedication are the keys to longevity in this business.
预测农业未来的最好方法就是去创造它。
Words are not mere sounds or marks, but signs of facts.