These Action classes provide an interface to the application's Model layer, acting as a wrapper around the business logic.

这些action类为应用程序的model层提供了一个接口，充当围绕业务逻辑的包装器。

youdao

Action started as an interface and changed into a class over time.

Action开始为一个接口，后来却变成了一个类。

youdao

Therefore, Struts provides a business interface it does understand, Action.

因此，Struts 提供了它能够理解的一个业务接口，即 Action 。

youdao

The simple interface means controlling the action is a breeze.

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He said the touchscreen interface with the Wii U Gamepad controller, combined with the main-screen action on a television, opens up options that have never been possible.

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Which conditions (finance, science-policy interface, economic instruments, etc) should be created in order to stimulate effective action?

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