大双小双大单小单是什么

简介：It's a pity that it's just two lanes. Su Can knows that in later generations, after this national highway has been used for six or seven years, the road surface will be dilapidated and potholed. The asphalt road will be cracked in summer, collapse in winter, or rainwater will pour in during rainy days. Common thing. And that extremely corrupt official was scolded by the people of Pinghai County and will be infamy for eternity.