Clouds can't form without water evaporation.

没有水的蒸发，就无法形成云。

The skin is the largest of the body's organs. It keeps out foreign substances and prevents excessive water evaporation.

皮肤神经提供触觉信息，皮肤还有助于保持人体气温在37°的水平，其既可以减少皮肤血流量来保存热量，也可以增加皮肤血流量和汗水蒸发量来散出热量。

With little water available for plants and other organisms, much of the region is vulnerable to rising temperatures, which boost water evaporation in the soil and heighten the risk of drought.

由于植物及其他生物的可用水较少，这里的大部分地区都很容易受到气温升高的影响，致使土壤中的水分蒸发，增加发生干旱的风险。