Part 2 focuses on the common use of drill-down lists as a navigation method, and Part 3 focuses on forms, groupings, and other more advanced topics.

第2部分集中讲解将下钻列表作为导航方法的常见用途，第3部分集中讲解表单、分组及其他更高级的特性。

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In Part 1, the definition of terms is intended to establish a common set of term to use throughout the rest of the material.

在第1部分中，首先为其余部分中使用的词汇提供统一的定义。

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This part introduce the international common practice to use tax policy to support energy conservation, and summed up the experience for our reference.

该部分介绍了国际上运用税收政策支持节能的通常做法，总结了可供我国借鉴的经验。

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