快3算和值的方法过程

简介：There is a traffic police station at the entrance of No. 1 Middle School. They are not security guards, but real traffic police. The traffic police are also grassroots police. Of course, they are not to protect the safety of No. 1 Middle School, but the section of No. 1 Middle School is an accident-prone and often crowded road section, so here Police booths were set up and patrolling traffic police stood guard.