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1. Oxford Dictionary

   purlin

   • IPA[ˈpəːlɪn]

   英式

   • n.
     a horizontal beam along the length of a roof, resting on principals and supporting the common rafters or boards.

   • noun: purlin, plural noun: purlins

2. • 更多解釋

   purlin

   • IPA[ˈpərlən]

   美式

   • n.
     a horizontal beam along the length of a roof, resting on a main rafter and supporting the ...

   Oxford American Dictionary