蓄水箱隔熱

The cistern empties in five minutes. 貯水池五分鐘就流乾。

The water slowly emptied (from the cistern). 水(從貯水池)緩緩流出。

The cistern is empty but will soon fill again . 水缸空了，但很快又會滿的。

The cistern doesn't clean easily. 這水槽不容易洗干凈。

The cistern is empty but will soon fill again. 貯水器里現(xiàn)在沒水，但一會兒就會儲滿水了。