对枝状河流和网状河流进行分类调查，有利于分类管理。
Identification of the river type is advantageous to water region management.
世卫组织这份按性别年龄详细分类调查的新报告的结论并没有多少让人吃惊的内容。
WHO the detailed breakdown of age by gender to investigate the new report's conclusions are not surprised by the number of people.
鼓励扶轮社实施一种职业分类调查—以评估他们社区内实业及专业人士的兴趣为何。
Encourage clubs to conduct a classification survey - assessing business and professional interests within their communities.
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