以下为句子列表：
英文: Before conducting regular sampling surveys, it is necessary to find out about the basic statistics units and their geographical distribution and to establish a scientific sampling framework in accordance with an approved plan for sampling surveys.
中文: 进行经常性抽样调查，应当在调查前查明基本统计单位及其分布情况，按照经批准的抽样调查方案，建立科学的抽样框。
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英文: The data in this chapter show the basic conditions of agricultural production and rural economy, including basic statistics on rural areas, basic conditions of agricultural production, sown areas of farm crops, output of farming, forestry, animal husbandr
中文: 本章反映我市农业生产和农村经济的基本情况，内容主要包括农村基本情况、农业生产条件与生产情况、农作物播种面积、农林牧渔产品产量、耕地、农林牧渔业产值、农业商品产值和商品率、乡镇企业等方面的统计资料。
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