durain

名词 n.
中文释义

英文释义

名词 n.
  1. A type of coal. countable,uncountable
    — The comparative absence of durain in many American coals caused some confusion in early attempts to correlate the English and American systems of nomenclature, since the duller portions of the American coals were at first compared with the English durains, whereas they should have been compared with the duller portions of clarains.

词形变化

durains plural

词源

From Latin dūrus (“hard”) + -ain in fusain; compare French -ain (“-ane”). Coined by British birth control campaigner and paleontologist Marie Stopes in 1918.
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