首先我要说明一下游戏规则。

First, I'll explain the rules of the game.

《牛津词典》

这说明这是历史上第一次在全国竞选中在电子游戏中来打竞选广告，并且这一事件导致了一些争论，就像奥巴马经常攻击电子游戏的危害。

This appears to be the first time that a national campaign has made a buy in a video game, and is leading to some debate, as Obama often campaigns about th dangers of video games.

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斯坦伯格通过电子游戏很好地说明了这一点。

A video game Steinberg USES draws this out nicely.

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