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单词 l sill
释义

WordReference Random House Unabridged Dictionary of American English © 2024
L sill, [Carpentry.]
  1. Buildinga sill for a building frame composed of a plate resting on the basement wall and a header or joist at the outer edge of the plate.
Cf. box sill. 
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更新时间:2025/7/24 6:01:27