Limitations to this study include the cross-sectional design and self-report of sun exposure.

此项研究的局限性包括横向设计及自我报告日晒情况。

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The cross sectional design of the urban road is the important content in the city construction.

城市道路横断面设计是城市建设中的一项重要内容。

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Design includes highway route alignment, Horizontal alignment design, Profile design, cross-sectional design, embankment design, road design, and several main parts.

设计主要包括公路选线定线、平面线形设计、纵断面设计、横断面设计、路基设计、路面设计等几个主要部分。

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The problem is that while there are lots of observational or cross sectional studies on soda and weight gain, there are very few studies which, by their design, can show cause and effect.

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