I did come across a document (PDF) from the U. s. Consumer Product Safety Commission that suggests that ages four and five are when it's appropriate for kids to "ride small bicycles."

我怡好从美国消费品安全委员会里看到一份文件(PDF格式的)，上面告诉我们，四岁五岁是孩子“骑儿童自行车”的适当年龄。

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According to this handy little booklet (PDF) from the U. S. Department of energy, 11 percent of a household's energy budget is spent on lighting.

根据这本美国能源部的方便小册子(PDF)，家庭能源预算的11%花在了照明上。

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Several of 2002's most popular Server clinic columns explained how to manage common desktop technologies, including PDF and DOC files, from servers.

年度最受欢迎的服务器诊所专栏中有几篇文章解释了如何从服务器管理常见的桌面技术，包括PDF和DOC文件。

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Render Options in Rails 3 - Yehuda Katz looks at how Rails 3's rendering pipeline works and demonstrates how to add a custom PDF renderer to it.

——YehudaKatz关于Rails3的渲染通道工作，并演示了如何添加自定义的PDF格式渲染器（render）。

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For the reported jet fuel pricing information, please see the U. S. Department of Energy's Spot Prices of jet fuel, which is available in PDF format.

关于公布的航空燃料定价信息，请参阅美国能源部的航空燃料现货价格，此文件以pdf格式提供。

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Author(s) may supply Publisher's Version/PDF to students/use the article for teaching purposes.

作者可以将出版者版本/PDF作为教学用途，发布给学生或用于教学用文章。

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Set the document title, subject, author, keywords, creator to the encrypted PDF file (s).

设置文档的标题，主题，作者，关键词，造物主对加密的PD F文件(的)。

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Set the document title, subject, author, keywords, creator to the encrypted PDF file (s).

设置文档的标题，主题，作者，关键词，造物主对加密的PD F文件(的)。

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