Water authorities are turning to technology to crack down on excessive water use.

水务当局正在求助于技术，以减少过度用水。

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。

Third, while it's a good idea to protect lakes and marshes from excessive water use and development, that will not save frog populations.

第三，虽然保护湖泊和沼泽免受过度用水和开发是个好主意， 但这并不能挽救青蛙的数量。