They played a computer game that paid real cash to look for money behind three doors on the screen. (You can play it yourself, without pay, at tierneylab.blogs.nytimes.com.)
他们需要花钱在电脑屏幕上的三扇门后寻找钱币（你也可以免费玩这个游戏，游戏网址是tierneylab.blogs.nytimes.com）。
They played a computer game that paid real cash to look for money behind three doors on the screen. (You can play it yourself, without pay, at tierneylab.blogs.nytimes.com.)
他们需要花钱在电脑屏幕上的三扇门后寻找钱币（你也可以免费玩这个游戏，游戏网址是tierneylab.blogs.nytimes.com）。
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