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vitrain
释义
WordReference Random House Unabridged Dictionary of American English © 2024
vit•rain
(vi
′
trān),
USA pronunciation
n.
Mining, Mineralogy
the material of which the friable, vitreous layers in banded bituminous coal are composed. Cf.
clarain, durain.
Latin
vitr
(
um
) glass +
-ain,
as in
fusain
1915–20
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