Babies are beautiful. I always want to smile at them in the street, perhaps because they are a rarer and more precious sight in this ageing country or because they remind me of my grandchildren. There are about 3.5 million children aged four and under, while dogs on the streets are a more plentiful 13.5 million. Is the dog boom compensating for fewer children? As time goes by, there are going to be ever more grandparents and ever fewer children to beam at foolishly.
for grammar, punctuation, and spelling errors in the text
，这一点在夫子中也有详细论述
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区域红利观察：一线城市与新兴增长极的差异化机遇