rain可數(shù)嗎？

　　例句：

　　There will be rain in all parts of the country.

　　全國各地將有雨。

　　The boys went for a walk despite of the rain.

　　盡管下雨，孩子們還是去散步。

　　The rain beat against the windows.

　　雨水拍打在窗戶上。