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问题是,我们是否乐于假设我们的孙子孙女可能永远无法在大象的图片书之外看到大象?
The question is, are we happy to suppose that our grandchildren may never be able to see an elephant except in a picture book?
Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.
生命是一段旋律,让它变得美丽。