每一次同学们在教室前边打水喝时,有些同学慢手慢脚,把水都弄到地上,造成浪费。我希望发明一个废水收集器,可自由滑动。当地上有水时,就自动把水吸干,再利用吸到的水为教室拖地。当有剩余的水时,装置自动将废水送至废水存储库,用来冲洗厕所等。当同学接水后没有关上水龙头,装置会提 Every time when students drank water in the front of the classroom, some of them slowed their hands slowly and brought water to the ground, resulting in waste. I want to invent a waste collector that slides freely. When there is water on the ground, the water is automatically drained and the water sucked in is used to mop the classroom. When there is surplus water, the device will automatically send the waste water to the waste water storage tank to wash the toilet and the like. When the students did not close the tap after receiving water, the device will mention