And if cars switch from oil to electricity, the demand for power generated from carbon-free sources will increase still further.

如果汽车由石油驱动改为电驱动的话，对于碳素燃料所产生的电能的需求将会增长许多。

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For example you can switch from a free-form flowchart to a swimlane (line of visibility) view at any time.

例如，可以随时从自由格式流程图切换为泳道图(行式视图)。

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Membrane keyboard: the keyboard using membrane switch technology, hair-trigger, free to users.

薄膜键盘：键盘采用薄膜开关技术，一触即发，用户。

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It was announced a few months back that Star Wars: The Old Republic, in the face of dwindling player numbers, would be making the switch to free-to-play sometime this fall.

FORBES: Star Wars The Old Republic: Free to Play November 15th

Instead, many will switch to free alternatives such as Gnutella and its variants, which are less easy to scale up than Napster but are also harder to shut down and are getting easier to use.

ECONOMIST: Digital copyright

So, if you want to help the trout stream that runs through your vacation property, Macintosh recommends making the switch to phosphate-free detergent and organic lawn fertilizer.

FORBES: Magazine Article