名词
中文翻译：人口普查区
同义词：
['census area', 'statistical area']
例句：
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1.The census tract is the smallest unit of geographic area for which a census is conducted.
人口普查区是进行人口普查时最小的地理面积单位。
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2.The census tract was designated as a conservation area to protect endangered species.
人口普查区被指定为保护濒危物种的保护区。
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3. The census tract has a population of about 50,000 people.
人口普查区大约有5万人的人口。