anthracite

n [U] very hard form of coal that burns with little smoke or flame 无烟煤.

Antarctica, ante, ante-, ante-room, antecedence, antecedent, antechamber, antedate, antediluvian, antelope, antenatal, antenna, antennae, antepenultimate, anterior, anthem, anther, anthill, anthologist, anthology, anthrax, anthrop(o)-, anthropoid, anthropological, anthropologist, anthropology, anthropomorphic, anthropomorphism, anti, anti-, anti-aircraft, anti-depressant, anti-hero, anti-personnel, anti-Semite, anti-Semitic, anti-Semitism, anti-tank, anti-tank missiles, anti-trust,