| 摘要 |
This manufactured container is made of thin, pliable, synthetic material. It has a base made of a thin sheet of pliable synthetic material and two side walls. Along the container's base, there is a folded edge. Between the base and two side walls, there is a common vacancy, which can be filled by liquid and pressed gas. Once filled the container can becom a closed pocket. The pocket. can expand and contract to a certain size and distribution, and is distributed by a continuous attached line to two adjacent edges.
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