接下来是代码执行，可能是直接执行，也可能过一段时间之后执行，其执行结果又作为另一请求的一部分被发往这个世界的另一参与者，以此类推。
This is followed, either directly or after some time has passed, by execution of code - as part of which a request might be sent to yet another part of the universe, and so on.
到目前为止，在本 系列 中，我已经使用了一个基于比赛和参赛者类推关系的简单域展示了各种数据库存储技术。
So far in this series, I've used a simple domain based on the analogy of races and runners to demonstrate various data storage technologies.
通常，员工和求职者都必须将此类推荐正式通知公司。
A company often must be formally notified about such referrals by both the staffer and the applicant.
应用推荐