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单词 velum
释义 velum
 /vee"leuhm/,  n.  ,  pl.   vela /-leuh/, for 1, 2, velum for 3.
  1.  Biol.   any of various veillike or curtainlike membranous partitions.
  2.  Anat.   the soft palate. See under palate (def. 1).
  3.  Meteorol.   a thin cloud, large in horizontal area, that is draped over or penetrated by cumuliform clouds.
 [1765-75; < L velum sail, covering]
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