| 摘要 |
A shelter bed comprising: a mattress on which at least one user can lie down; a frame on which the mattress is set, and which comprises legs supporting the entire shelter bed on a floor and a buoyancy device generating buoyancy holding the entire shelter bed on a water surface; and a protective shell for protecting the user, the protective shell being movable between a first position in which the protective shell covers the user lying on the mattress and a second position in which access to the mattress is released to the user.
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