这些已成为活生生的教材使后人有所获益。
And it has become the live knowledge for the futurity to benefit from.
对于从小生长在城市的孩子们来说，真是一个活生生的教材！
Growth in the city for young children, is a vivid teaching materials!
所以我们要把自己周围活生生的事物作为教材。
That is why we take the living material around us as subject matter for education.
所以我们要把自己周围活生生的事物作为教材。
That is why we take the living material around us as subject matter for education.
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