Noun:

1. a heat-resistant clay

Firea菲雷亚firen.火；失火；炉火；开火；热情v.开火；解雇；点燃；急速地连续说fire button灭火按钮fire vessel救火船firespottern.森林火灾监视员Fire Emblem火焰之纹章,又名圣火徽章fireballingadj.投手速度很快的；充满热诚活力的fire cannon空气加温器firehydrantn.灭火龙头(消防栓)fire-evil火邪fire copper加热式麦芽汁浸煮锅fire plough防火犁

1. His aim was to improve the efficiency of the open fire by the use of lumps of fireclay and by a canopy, both designed to increase the amount of radiant heat.
   他通过炉盖和火泥块的使用来起到改善敞开的炉子的效率的目的，这两项设计提高了热辐射量。