Stamps become yellow easily and rapidly after they take in wet air.

邮票吸入湿空气后容易迅速发黄。

youdao

Although it is near the sea, the cold, wet air from the coast does not bring clouds.

虽然它位于海边，但海岸的冷湿空气不会把云带过来。

youdao

This helps because the plastic cover keeps the stamps off the wet air.

这是有帮助的，因为塑料盖使邮票远离潮湿的空气。

youdao

This wet air is then carried by trade winds to the normally rainy areas of the western Pacific, near the Equator.

VOA: special.2009.09.29

All this wet air is pulled in by a high pressure area over the Indian Ocean and a low pressure area to the south.

VOA: special.2010.05.25

Air will pass through the wet cloth.

VOA: special.2009.11.30

The air was wet and cool, and Nana cracked her own window.

NEWYORKER: Soldier��s Joy

In the cold wet air she felt the last of the beer buzz evaporate.

NEWYORKER: I.D.

Every delivery was accompanied by new, full sets of disposal bags, deodorants, air fresheners and wet wipes - which he has now amassed into a collection in a drawer.

BBC: Medical companies 'waste money' on needless equipment