也表示动作和状态静态的持续；
It indicates the succession of any actions and static state;
适合任何过去持续一段时间的动作和状态，包括反复发生的动作或状态。
'Used to' is good for any action or situation that continued for a period of time in the past, including repeated actions or situations.
表的行和列代表事件和状态，单元格内包含动作和转移。
Rows and columns represent events and states, and cells contain actions and transitions.
与一个MVC应用程序的交互遵循了用户动作和视图更替(这里假设视图是无状态的)的自然周期。
Interactions with an MVC application follow a natural cycle of user actions and view updates, where the view is assumed to be stateless.
下拉窗口本质上就是对状态栏的一种扩展：它可以在所有的应用软件内调用，并为新的事件告示提供附加的动作和信息。
The pull down window shade is essentially an extension of the status bar: it can be reached from within all applications and provides additional actions and information for new event notifications.
对触点信号动作和限位开关的工作状态进行了说明。
Valve contact output action and work status of limit switch are illustrated.
对触点信号动作和限位开关的工作状态进行了说明。
Valve contact output action and work status of limit switch are illustrated.
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