单词	f-system
释义	f-system noun : a system of camera lens aperture markings that uses f-numbers Word History Etymology f (symbol for focal length)
随便看	oxaluric acid oxamate oxamic acid oxamide Oxamine dye oxammite oxandrae oxandras oxanilic acid oxanilide oxaprozins oxazepam oxazepams oxazines oxazole oxberry oxbird oxbiter oxblood oxbloods oxbow oxbow lake oxbow stirrup oxbower oxbowest

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。