The program, known as H-1B, has been a mainstay of places such as Silicon Valley and Wall Street, where many companies have come to depend on computer programmers from India or engineers from China.

这个名为“H-1B”的项目，一直以来就是硅谷和华尔街等地区的支柱。 在这些地方，很多公司已经对来自印度的程序员或来自中国的工程师形成依赖。

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In addition, programmers have come up with all sorts of algorithms and tricks such as Alpha-Beta pruning, Negascout, and MTD(f) in order to lessen the number of nodes the computer must examine.

此外，程序员们也提出了很多算法和技巧来减少节点数目，比如阿尔法 贝塔剪枝算法（Alpha-Beta pruning），Negascout搜索算法以及MTD（全称是：Memory enhanced Test Driver，即记忆增强测试驱动，译者注）方法。

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There are limits to the benefit, as some types of labor are in short supply (such as computer programmers and nurses in rural areas).

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On that day, the U.S. Citizenship and Immigration Services (USCIS) is scheduled to start accepting applications for the limited supply of H-1B visas, which allow businesses to employ foreign workers with special skills such as teachers, scientists and computer programmers for an initial period of up to three years.

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They are also producing professional-services firms such as Tata Consulting Services and Infosys that take fresh graduates and turn them into world-class computer programmers and consultants.

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