The trigger, once pressed, dispatches a custom event.

触发器被触发之后，就会分派一个定制的事件。

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Once pressed, you'll see a? Symbol appear in the address bar and you can simply enter your search query and hit Return.

一旦按下，您会看到一个？象征出现在地址栏，您可以只需输入您的搜索查询，并按返回。

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Once on board the wool will be pressed to recover the oil and then reused.

送上船的羊毛会被挤压，然后再次使用。

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Once, he pressed Scott about whether he was committed to the hard work it would take.

NEWYORKER: A Pickpocket��s Tale

Once this rat pressed the correct lever, its brain activity was delivered as electrical stimulation into the brain of the second rat - designated the "decoder".

BBC: One rat brain 'talks' to another using electronic link

There's no word yet on when the pause button will be pressed once more, but you can probably assume it won't be until Q1 2013 at the earliest.

ENGADGET: Facebook pauses efforts to launch ad network