什么是分数四则混合运算

简介：There is a dedicated line from Guangdong to Tianjin. In the future, rice from Guangdong and Fujian provinces will no longer be transported by water, but by sea to Tianjin. The time is tentatively set at two years. If the results are not good, or if there are any violations of court laws, the court can ban it at any time. At that time, not only the Shen family will be held responsible, but Shen Tingyang will also be guilty.