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单词 sill
释义 sill
 —sill-like,  adj.  
 /sil/,  n.  
  1. a horizontal timber, block, or the like serving as a foundation of a wall, house, etc.
  2. the horizontal piece or member beneath a window, door, or other opening. See diag. under double-hung.
  3.  Geol.   a tabular body of intrusive igneous rock, ordinarily between beds of sedimentary rocks or layers of volcanic ejecta.
 [bef. 900; ME sille, OE syl, sylle; c. LG süll, ON syll; akin to G Schwelle sill]
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