evaporate
/ɪˈvæpəreɪt; ɪ`væpəˌret/ v
1 [I, Tn] (cause sth to) change into vapour and disappear （使某物）蒸发掉
The water soon evaporated in the sunshine. 水在阳光下不久就蒸发了.
Heat evaporates water into steam. 水受热变成水蒸气. =>Usage at water1 用法见water1.
2 [I] (fig 比喻) be lost or cease to exist 消失; 不复存在
His hopes evaporated, ie he no longer felt any hope.他的希望破灭了.