These classes delete selected elements from your cache when certain controller actions fire.

在某些控制器击发时，这些类会从缓存内删除选定的元素。

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Swing components that are the targets of user interaction fire events when the user interacts with them; data model classes fire events when the data has changed.

Swing 组件作为用户交互的目标，在用户与它们交互的时候触发事件；数据模型类在数据发生变化时触发事件。

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These classes decide when they need to fire events, and when they do, they call all the listeners that are registered.

这些类负责决定什么时候它们需要触发事件，什么时候确实触发事件，以及什么时候调用所有登记的侦听器。

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Sometimes they're reluctant to take part in important training such as fire safety classes and child identification programs, which guard against abduction.

VOA: standard.2010.07.22

Glendale Community College canceled its Friday night classes due to the brush fire near California Highways 134 and 2, the school said on its Twitter account.

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As demand skyrockets with the burgeoning middle classes in countries like China and India, palm oil producers and buyers have come under fire from environmentalists for widespread deforestation in countries like Indonesia that contribute to climate change and extirpation of endangered wildlife.

FORBES: Solazyme Taps Asia Market In Algae Oil Deal With Japanese Conglomerate