The urgency of his voice galvanized them into action.

他急迫的声音激励他们行动起来。

《牛津词典》

E.g., "John throws the ball" is active voice. The doer of the action, John, precedes the verb.

例如，“John投球”是正面的语气，动作的执行者John放在动词前面。

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If you don't know who is responsible for an action, passive voice can be the best choice.

如果你不知道谁做了某个动作，那使用被动语态会是最好的选择。

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The changing demographics in America require that our politicians become more culturally intelligent about Hispanics and begin to empower their voice and encourage them to take action.

FORBES: Who Really Owns the 2012 Hispanic Vote?

For all of Mountain Lion's iOS-derived goodness, one highlight plenty of folks would love to see in OS X is still missing in action: Siri, the voice-controlled personal assistant.

CNN: Review: Mac's Lion adventure continues

Nintendogs will launch later this year in North America, a game in which "owners" interact with and train a variety of breeds of digital puppies (what is up with all the pooch action lately?), giving voice commands, playing games and "developing real emotional bonds" (we'll have to see it to believe it).

ENGADGET: Nintendo Revolution to include backwards compatibility and WiFi