| 摘要 |
An ornamental fish bowl closed on all sides and including a water pump with an aspirator for circulating the water and adding small air bubbles to it. The water is directed through an aspirator and a filter for removing suspended solids, then through a first screen to an annular space where the fish are confined. A second screen permits water to be drawn from the annular space and directed to the entrance pipe of the water pump.
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