| 摘要 |
A drinking cup assembly (10) including a cup (12) having an open end and a cap(14) adapted to close the open end. The cap (14) includes a drinking spout(16) and an air vent (18), each having mating surfaces adjacent or incorporated therein. A flow control valve (20) has two stacks (24) adapted to engage the mating surfaces of the drinking spout (16) and air vent (18). Each of the two stacks has a concave valve face (30) at a top portion thereof.
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