【Key words】 Isolation measure； impulsive vaccination； global asymptotic stability； disease-free periodic solution； uniform persistence；
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Referring to data about Beijing, we know that isolation measure taken ahead or delaying for 5 days makes the propagation of disease ahead or delaying for 20 to 30 days.
通过对北京数据的参考可得，提前或延后5天采取严格的隔离措施，可使疫情的传播提前或推后20～30天。
One conservationist who recently went looking for a rare poisonous bird in an unexplored region had to take along a local shaman as a guide, a measure of Papua New Guinea's splendid isolation.
一位最近进入未开发地区寻找一种罕见有毒鸟类的环保主义者不得不带上一位当地萨满作为向导。萨满巫师也是当地与世隔绝的标志之一。
We discussed how to measure and analyze a process in the value chain section, as well as the potential pitfalls of looking at automation improvements alone or in isolation.
我们会讨论怎样评价和分析价值链部分中的进程，以及查看自动化改进的潜在性陷阱。
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