名詞 anthracite:

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

1. We should use anthracite to avoid air pollution.
   我們應(yīng)該使用無煙煤以防止空氣污染。
2. We are required by environment protecting department to use anthracite.
   環(huán)保部門要求我們使用無煙煤。

an.thra.cite

n.（名詞）
A dense, shiny coal that has a high carbon content and little volatile matter and burns with a clean flame.Also called hard coal
無煙煤：一種很亮的高密度煤，含炭量高，揮發(fā)性物質(zhì)少，燃料時(shí)火焰純凈也作 hard coal

來源：
Probably ultimately from Greek anthrakitis [a kind of coal]
可能最終源自 希臘語 anthrakitis [一種煤]
from anthrax anthrak- [charcoal]
源自 anthrax anthrak- [炭，木炭]

【引伸】
an.thracit.ic