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I can’t bear the drink which stands in the sucker to pollute my desk. the reason which the drink stands in the sucker’s mouth is that the pressure has changed after drinking. And when you drink again, the drinking box is pushed by hand and the drink which stands in the sucker’s mouth will drop down.
My design can deal with the problem because the incision of the sucker’s mouth can avoid the drink to be residual. So the problem about the drink’s dropping doesn’t exist. Another reason is the little through in the middle of the sucker. So whatever you press the box, the air in the box can only go out from the little through without any drink.