还可以看到，when关键词定义规则中的条件块，then关键词定义结果块。
You can also see that the when keyword defines the conditional part of a rule, and the then keyword defines the consequence part.
目前，常用的包括黑名单与白名单技术、基于关键词搜索以及设定过滤规则等方法。
Nowadays, anti-spam measurements often include black or white list technique, manual rules and keyword based content filtering.
目的：探讨医学论文关键词的选取方法和标引规则。
Objective: To explore the selection method and indexing rules of keywords of medical paper.
应用推荐