英语翻译（1）纯水是不导电的,普通水也是电的不良导体,但潮湿（带水）的物品却能导电!不能用湿手去扳开关,绝缘体要保持干燥

Pure water is nonconducting,and ordinary water is poor conductor.However,soppy items are electric.So never touch switches with moist hands.What`s more,insulators should be kept dry.
High barrages should be built in large hydropower stations in order to increase the gravitational potential energy of water,so that the generated output of the electric generating sets can be bumped up.