农民获得30年的用地租约(虽然常常没有支持性文件)。
Farmers are given 30-year leases (though often no supporting documents) to use plots of land.
支持性文件，包括管理制度、产品规范、质量记录等。
Supportive documents Include management rules, product specification, quality records.
技术型作家为新闻报道，说明书和复杂信息沟通支持性文件做准备。
Technical writers prepare journal articles, instruction manuals, and supporting documents essential to the communication of complex information.
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