名词
中文翻译：Unknown
同义词：
['roving survey', 'mobile survey', 'field survey']
例句：
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1. The company is conducting a running survey to gather feedback on their new product.
公司正在进行一项流动调查，以收集对新产品的反馈。
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2. The roving survey team has been collecting data from various locations across the city.
流动调查团队已经从城市的各个地点收集数据。
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3. The field survey revealed that the population growth rate was higher than expected.
现场调查发现人口增长率高于预期。