anthracite

名词 anthracite:

1. a hard natural coal that burns slowly and gives intense heat
   同义词：anthracite coal, hard coal

1. We should use anthracite to avoid air pollution.
   我们应该使用无烟煤以防止空气污染。
2. We are required by environment protecting department to use anthracite.
   环保部门要求我们使用无烟煤。

an.thra.cite

n.（名词）
A dense, shiny coal that has a high carbon content and little volatile matter and burns with a clean flame.Also called hard coal
无烟煤：一种很亮的高密度煤，含炭量高，挥发性物质少，燃料时火焰纯净也作 hard coal

来源：
Probably ultimately from Greek anthrakitis [a kind of coal]
可能最终源自 希腊语 anthrakitis [一种煤]
from anthrax anthrak- [charcoal]
源自 anthrax anthrak- [炭，木炭]

【引伸】
an.thracit.ic