### Chinese: 实行分区差异化管理政策，由一道防控外溢防线变为两道防线，有望实现关口前移，压缩疫情外溢风险，以最小社会影响、最低社会成本实现疫情防控最大成效。
### English: The regional difference management policy and the change of one preventive line to two lines can make the <v>strategic pass move forward</v> and reduce the risk of epidemic overflow, so as to minimize social influences and reduce social cost while achieve the maximum effect in epidemic prevention and control.
### Errors: There is a major accuracy/mistranslation error at "strategic pass move forward" within <v></v>.

### Improved English: The implementation of the policy of zoning and differentiated management is to make one defense line of the spread of prevention and control into two lines, make it possible to move the gateway forward, reduce the risk of the spread of the epidemic, and to achieve the maximum effectiveness of epidemic prevention and control with the minimum social impact and social cost.
