论文部分内容阅读
在某一个地区,有两家的孩子共5个人,他们合伙卖同一份报纸,他们每个人都很勤奋,每天沿街叫卖。
In a certain area, there are 5 children with two children. They partner to sell the same newspaper, each of them working diligently and selling it on a daily basis.