### 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 implementation of the differentiation management policy, from one prevention and outflow defense line to two lines of defense, is expected to the threshold of advance, compress the outflow risk of the epidemic, <v>with the least social impact and the lowest social cost to the maximum outcome of the prevention and control of the epidemic</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.
