You can have multiple perspectives open at any given time; to switch from one to another, just select its icon.

在任意给定的时间里，您都可以拥有多个打开的透视图，并且只需要选择其图标就可以从其中的一个切换到另一个。

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We also use the -raisecmd callback on the second tab to switch the third tab from its disabled to its active state once the second tab has been raised for the first time.

我们还在第 二个标签上使用了 -raisecmd 回调，目的是当第二个标签第一次 被重新激活时将第三个标签的状态由禁用切换为活动。

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Alfred: you have, I think. Switch on the radio and set your watch by its time-signal.

阿尔弗雷德：我看，你是忘了。开收音机，根据广播报时信号对你的表吧。

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Bristol elects a third of its councillors at a time, but from 2016 will switch to all-out elections to be held every four years.

BBC: Local elections 2013: Lib Dems lose nine seats in Bristol

The switch comes at a time when the sport is stepping up its efforts to go green.

FORBES: NASCAR Gets Greener

Such customers might even switch permanently if Amtrak can get more of its trains to run on time.

ECONOMIST: Some companies have flourished in the wake of the attacks