我们将在下面了解到，为了获得事件处理程序实例的已确定范围的局部变量，可以将活动的范围定义为事件处理程序的直接子项。

We'll see below that it is useful to define a scope as a direct child of an event handler in order to have scoped variables that are local to the event handler instance.

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对食品与药品管理局来说，在药品得到批准之前确定它们对人体有何种影响非常重要，但又要在安全允许的范围内让程序加快；许多生命依赖于这一程序。

It was important for the FDA to determine how drugs would affect the body before they were approved, but the process should be as speedy as safety permitted; lives were riding on it.

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我们需要在一定范围的场景下，确定我们基于网络的应用程序的操作能力，这样我们能正确计划。

We need to identify the operating capacity of our Web-based applications in a range of scenarios, so we can plan accordingly.

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