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This is a very common question, but I think give answer is very easy, if really wanna explain is quite difficult.
有个很普通的问题, 回答容易,若要解释却很难。
给出答案
This is a very common question, but I think give answer is very easy, if really wanna explain is quite difficult.
有个很普通的问题, 回答容易,若要解释却很难。