in the past three or four years, the world wide web has given birth 
to a whole industry of point-and-click spying.
骨干：the world wide web has given birth to a whole industry
后置定语：of point-and-click spying.介词短语（介词+名词）做后置定语润饰industry。
翻译：在曩昔的三四年中，世界互联网现已派生出一个可称为点击谍报的无缺的工业。
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