They knock on people's doors and shout "Trick or treat!" for sweets.

他们敲邻居的并说“不给糖就捣乱”来得到糖果。

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We knock on people's doors to ask for candies.

我们敲别人家的门是为了要得到糖果。

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They knock on people's doors, and people give them sweets and small presents.

他们挨户去敲门，人们就给他们糖果和小礼物。

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And yet, what we learned was that when ordinary people come together -- (applause) -- when you believe in something so deeply that you're willing to talk to your friends and talk to your neighbors and talk to your co-workers, knock on doors and make phone calls -- when the American people decide what's right, then all that money doesn't matter.

WHITEHOUSE: Remarks by the President at a Campaign Event