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很多同学的家里都有气压保温瓶,同学们有没有发现每次取水的时候都要压好几次,很不方便。那能不能将它改进一下,只要压一下,水就自动流出来呢?
Many students have a pressure thermos at home, and the students did not find it hard to squeeze several times each time when taking water. That can improve it, just press it, water will flow out automatically?