What this means is that our lips have little to no protection from the environment, and their main source of moisture is the saliva that comes from our mouths.

这就说明嘴唇易受环境影响，而嘴唇水分大多来源于嘴里的唾液。

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Moisture is adequate protection of health and beauty.

充足的水分是健康和美容的保障。

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Wrap the transformer after unpacking with plastic film for protection from moisture and possible entry of metal fillings during the building construction before the transformer is to be used.

变压器在拆箱后，在投入运行前的大楼施工期间，要用塑料薄膜外裹保护，防潮和防止灰尘甚至金属屑的可能进入。

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MicroArmor's Mr. Muir adds not all of the 4 Hour Protection product will rub off and moisture on the hands is enough to allow it to work.

WSJ: How Alcohol-Free Hand Sanitizers Hold Up