| 摘要 |
A diving snorkel having a ventilating portion comprising an assembly of a first pipe portion and a second pipe portion extending in parallel to and communicating with each other, and a main pipe of which the upper end is connected to the first pipe portion, wherein the second pipe portion is provided at its upper end with an air inlet and at its lower end provided with means to prevent the undesirable flow of water into the main pipe 2 through the air inlet as a diver is in the water.
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