We know the water moves downwards when its left to itself as in rain, but you see if it moves downward on the right that would leave a gap, vacuum a hole in the pipe.
我们知道水都是往下运动的，就好比如同下雨一样，但是你会发现如果在右边的水也向下运动，就会产生一个空隙，在吸管里会有一段真空部分。
The rain that night was unusually heavy, and water began to pour from a broken pipe on the church roof straight on to Fanny's grave.
那晚，雨下得异常的大，雨水从教堂顶上的一截破管子里径直倾泻到范妮的墓上。
After being filtered, the rain water flows into a water-purifying pipe 50 and is discharged by a blow-off pipe 20 connected with the water-purifying pipe.
雨水经过过滤后流入净水管中50，再通过和净水管连接的放水管20排出。
应用推荐