In the research, forest density is classified into three levels: high, medium and low.

在本研究中，吾人将森林分为高、中、低密度三种等级。

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The disturbance of wind mainly means the variety of speed and frequency of wind, and it's affected by forest density and the distribution of wind field under complex landform.

风的扰动主要包括风速、频率等的变化，并受不同林木密度和复杂地形下的风场分布的影响。

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These beams, known as la foret (the forest) because of their density, formed the cross-shaped roof that ran the length of the central part of the cathedral.

这些因其密度而被著称为 la foret（森林）的梁，组成了横跨大教堂中心部分的十字形屋顶。

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