XP是一种相对较新的软件开发方法(推出约数年时间)，此方法在Internet的飞速发展中得到了极大的关注。
XP is a relatively new software development methodology (about seven years old) that gained tremendous momentum during the Internet boom.
近30年时间，层序地层学理论得到了飞速发展，并在石油、煤矿等矿产领域获得了应用，取得了极大的经济效益。
In the recent 30 years, the theory of sequence stratigraphy, which has been applied widely in the fields of petroleum, coal, and mineral resources, develops greatly.
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