Electronic government is not a simple information technology or an issue in the realm of public administration, but a complex social system.

电子政务不再是一个简单的信息技术或者公共行政领域的问题，而是一个复杂的社会系统。

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It may be helpful to review the purpose of the market sizing question, which is to see whether or not you can break down and explain a seemingly complex concept in a simple way.

回顾市场规模估算问题的目的能够帮助您分清哪些概念可以拆分，哪些不能；它能帮助您用一个简单的方法去分解看似复杂的概念。

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If the data is simple enough, this could be a comma, but more complex strings are usually separated using tabs, new lines or a combination of characters not likely to be found in the record itself.

如果数据简单，分隔符可能是逗号，但更复杂的字符串通常用制表符、换行键或在记录中未出现的字符组合来分隔。

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"It would be nice if you could do that but I'm not sure it would work - it depends whether it is a simple mechanical component or something more complex, " Prof Pillinger, who now works at the Planetary and Space Sciences department at the Open University, told BBC News.

BBC: 3D printers could use Moon rocks, say scientists