Part three: Research design stage.

第三部分：研究设计。

Second part: Research design and method.

第二部分：研究设计与方法。

Chapter three, research design and investigation.

第三章，研究设计与实施。

To research design we must grasp the trend of design.

从设计发展趋势研究设计。

You just need to carefully research design scheme and the landscaping of the area.

你只需仔细研究设计方案和将进行景观美化的区域。