| 摘要 |
In combination, a floating structure supporting a person in a prone or sitting position, a propelling unit includes a casing with a handle mounted on it, the propelling unit being manipuable by one hand of the person on the floating structure, and a lanyard connected to the propelling unit and floating structure in such a way as to permit the propelling unit as a whole to be manipulated angularly and translationally by the hand of the person supported by the floating structure.
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