Are they all known to the person conducting the survey?
他们都认识做调查的人吗？
Market research, such as, conducting market survey, intelligence information collection, etc.
市场调研，包括进行市场调查，数据分析，情报信息收集等。
They are conducting a survey of the region.
他们正对那一地区进行调查。
They are conducting a survey of the region.
他们正对那一地区进行调查。
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