Wear a looser, second layer of breathable material (like fleece or similar fabrics).

第二层透气织物编织的要松(比如羊毛或类似纤维的织物)。

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Columbia utilizes Gore-Tex to keep in warmth; Omni-Tech, a waterproof, breathable material; and PFG-comfort technology.

Columbia利用了Gore - Tex技术来保持温暖性；omni - Tech，一种防水并且透气性良好的材料和PF G - comfort科技来提高舒适性。

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The discontinuous change in free volume will involve an abrupt change of the permeability of the breathable material layer.

所述自由体积的不连续变化会涉及所 述透气材料层的渗透性的突然变化。

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But some are also thought to harbour water ice, which could be used as a raw material for the manufacture of rocket propellant or even breathable air.

BBC: New venture 'to mine asteroids'