Although it dates from several hundred years after the building of the pyramids, its sophistication suggests that the Egyptians might have been developing ideas of flight for a long time.

尽管它的历史可以追溯到金字塔建造后的几百年，但它的复杂程度表明，埃及人可能很长一段时间以来一直在思考飞行的想法。

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After six years of working in the industry I began questioning my desire to continue developing games, and left the industry to try my luck with other endeavors.

然而当他在游戏业界中，经历了六年的工作生涯后，反而开始质疑自己是否拥有继续开发游戏的渴望。

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Because after five years without smoking, your risk of developing lung cancer is halved.

5年不吸烟，吸烟者患肺癌的几率就会降低一半。

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In November, 2003, after four years of developing their technology, MobiTV launched with the Sprint Network.

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After 15 years of developing Tarceva, which began through a collaboration with Pfizer (nyse: PFE - news - people ), Goddard is willing to wait a little longer for answers.

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We are in the process, after two years of preparation, of developing a security camp for kids that will be tested next summer.

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