单词	H and D speed
释义	H and D speed noun ¦āchənˈdē- : a number indicating the sensitivity of a photographic emulsion determined by the method of Hurter and Driffield Word History Etymology after Ferdinand Hurter and Charles Driffield fl 1890
随便看	raetia raetians Raeto-Romance RAF Rafah rafale rafales raff Raffaelesque raffe raffee raffia raffia palm raffia wax raffiae raffias raffinate raffinates raffing raffinose raffinoses raffiné raffinée raffish raffisher

英语词典包含469781条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。