Method: By using the methods of order of frequency and order of sum of money, the hypolipemic agents used in our hospital during 2002 -2004 were analyzed.

方法：采用频度分析和金额排序的方法对我院2002 -2004年调脂药应用情况进行分析。

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However, researchers from the Massachusetts Institute of Technology (MIT) say they have found a method of recovering oil after a spill using magnets, potentially saving companies like BP money in clean up bills.

CNN: Cleaning up oil spills with magnets and nanotechnology