| 摘要 |
The tumbler has an envelope in which a supple pocket (6) is fixed. The envelope has a curved wall (1), with a cylindrical sector in cross section, and a flat wall (2). The edges of the walls are fixed together (3,4) so that they can fold together. The pocket is shorter than the height of the walls and it is fixed to the upper edge (7) of the walls by its periphery. The flat wall is thinner than the curved wall. The folded tumbler can fixed to the wall of a cylindrical container.
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