| 摘要 |
A leak-proof ceiling structure associated with a roof to define a protected space beneath the roof and to prevent any liquid which may leak through the roof from passing to the protected space. A pair of elongated longerons are suspended beneath the roof with each of the longerons spaced apart from the other with the second end of the longerons higher than the first end thereof. Elongated troughs are suspended between the pair of longerons for catching liquid that may leak from the roof.
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