At this point our recommendation is to not bet on AIR to actually be available this year, but we cannot rule out a surprise announcement at the BUILD conference either.

就目前而言，我们的建议是不要期望air会在今年发布，但我们不排除BUILD发布会上有意外惊喜。

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No, the surprise is this: Beijing's air is actually getting cleaner.

但是，事实上，北京的空气质量正变得清澈起来。这让人感觉惊讶。

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Now, in a surprise, researchers have found that this chemistry thought to be restricted to sea spray occurs at similar rates in air above Boulder, Colo., nearly 900 miles away from any ocean.

现在，研究人员惊奇地发现，这种被认为只在浪花飞溅时才发生的化学反应，也以同样的速率发生在距离任何海洋都近1500公里的科罗拉多州博尔德(boulder)市上空。

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It might also surprise you to learn that air, hotel and rental cars only make up about 50% of the total spend that appears on an expense report.

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While in Afghanistan, the President also paid a surprise visit to American troops at Bagram Air Base.

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The lightning American advance on Baghdad, beginning before the air-war proper, recovered an element of surprise that the large and ponderous deployment seemed to have forfeited.

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