It is its structure that gives leather its permeability to air and water vapor.

正是皮革的结构使皮革对空气和水气具有可渗透性。

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This allowed us to design and construct each wall to possess the desired light and air permeability, while creating a pattern that covers the entire building facades.

这就要求我们将每道墙设计建设得具有理想的日照和空气渗透性，同时创造出一种覆盖整个建筑外立面的图案。

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Another possibility to check approximately the feather and down proofness is to measure the air permeability of the fabric.

另外可能近似测试出羽毛羽绒不穿透性的方法是：测量面料的空气渗透性。

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