- 問題詳情:Anyonewhohasexperiencedthejoyofdrivingthrougharainstormwiththesunroof(天窗)openunderstandshowairflowaroundthemovingvehiclescankeephimdrydespitetheexposure.Nowasimilarprincipleisbeingemployedtocreateanumbrellathatprotectspeoplefromtherainusing...
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