我们的注意力通常会被七种类型的广告吸引：电视、报纸、广播、杂志、户外海报、互联网和广告直邮。

We focus our attention on seven types of advertising: television, newspapers, radio, magazines, out-of-home, internet, and direct mail.

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某些种类的北极鸟受到近来雪雁数量急剧增加的威胁，这些雪雁在北极繁殖，并且正在取代生命力较弱的鸟类。

Some species of Arctic birds are threatened by recent sharp increases in the population of snow geese, which breed in the Arctic and are displacing birds of less vigorous species.

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那么你就需要食用更多的适当种类的能量来帮助你提升注意力，或者你需要额外的工作来保持你的清醒。

You will either have more of the right kind of energy to help your focus, or you'll need to work extra hard just to keep awake.

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