Manually: Users may fire events by using the user interface.

手工：用户可以使用用户界面触发事件。

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The Kindle Fire takes Amazon's wildly popular services and presents them in a solid piece of hardware with a responsive, easy-to-understand interface that works.

Kindle Fire拥有亚马逊广受欢迎的各项服务，同时通过性能可靠的硬件呈现在用户面前。 它的界面响应迅速、易于上手。

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Each rule class implements the RuleImplementor interface which includes two methods: fire and init.

每个规则类都实现了Rule Implementor接口，该接口包含两个方法：fire和init。

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Engadget's very own parent company AOL has released its Play music player app for Kindle Fire, and the interface here is actually considerably different from what you'd get on the straight Android version, available in Google Play.

ENGADGET: AOL redesigns its Play music player app for the Kindle Fire, premium version is free Thursday