Queued User-Triggered Unidirectional 排队 ; 用户触发
Queued User-Triggered Bi-directional 排队
User-driven and workflow-triggered custom actions 用户驱动和工作流触发的客户动作
User-triggered and dynamic help Rather than include help text next to each input field, show it only where required.
用户触发和动态帮助 。 与其在每个输入域后都加上帮助文字，不如让其只在需要时才出现。
Skype's registration form contains both user-triggered help (the blue box that is triggered by clicking the question mark) and dynamic help (the suggested user names).
Skype的注册表单既包含了用户触发帮助(蓝色的文本框是通过点击问号图标触发的)，也包含了动态帮助(建议用户名)。
Placing the logic inside an action method does not guarantee that it will be executed prior to rendering because a page view is not always preceded by a user-triggered event.
将逻辑放在一个动作方法中并不能保证该逻辑在视图呈现之前得到执行，因为页面视图并不总是在用户触发的事件之后。
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