在美国太空总署第一次派太空人上太空时，他们很快发现圆珠笔无法在零重力的情况下工作。

When NASA first started sending up astronauts, they quickly discovered that ballpoint pens would not work in zero gravity.

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一台13英寸的X1笔记本电脑重3.7磅，比相同大小的苹果MacBook Air重8盎司，但比同样大小的MacBook Pro轻8盎司。

At 3.7 lbs, the 13-inch X1 weighs eight ounces more than Apple’s 13-inch MacBook Air but eight ounces less than the 13-inch MacBook Pro.

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收购DoubleClick是谷歌对广告类公司进行的重大收购中第一笔，也是金额最大的一笔——此举在花旗集团(CitieGroup)看来是谷歌“昂贵但也十分重大的战略进展”。

DoubleClick was the first, and biggest, of Google's major advertising capability buys — what CitiGroup called Google's "very expensive but very significant strategic thrust."

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