| 摘要 |
Corkscrew comprises two elements (1, 2) articulated around hinge (3). When surfaces (4) of both elements are in contact, corkscrew can go through cork using manual pressure. When on the other side of cork, bottle is held vertically, inducing rotation of second element around hinge. Second element then forms obstacle that drags cork outside bottle when corkscrew is pulled up.
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