| 摘要 |
A toy double club with whistle including two elongate tubular bodies connected with a chain, each tubular body having a whistle in its inner cavity to move back and forth in a limited distance, the distance being by two opposing projections on the inner surface of the tubular body. A coil spring is placed between the whistle and an outer end of each of the tubular bodies so that the whistle gives out whistling sounds when moved back and forth by the swinging movement of the tubular bodies.
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