This serves as the callback mechanism we were missing when trying to invoke the human task directly from the business state machine.

这相当于一个回调机制，它在我们从业务状态机直接调用人工任务的设计方法中是没有的。

youdao

One convenient mechanism in languages that commonly host DSLs is method missing.

在诸多语言中一种常用于托管 DSL 的方便机制是方法缺失。

youdao

Part of the reason this feature is missing from the specification is the lack of a mechanism for referring to a group of EJB components, for example, through an expression language with wildcards.

规范中没有该特性的部分原因是缺少用于引用 EJB 组件群的机制，例如，使用通配符的语言表达方式。

youdao