单词	back focus
释义	back focus noun : the distance from the rear glass surface of a photographic lens to the focal plane when the lens is focused on a very distant object Word History First Known Use 1868, in the meaning defined above
随便看	ground plum ground puppy ground quiver ground raspberry ground rat bearably bearbaiting bearbaitings bearberries bearberry bearberry willow bearbind bearbine bearbines bearbrush bearcats beard beard grass beard hair beard lichen beard moss bearded bearded argali bearded collie bearded darnel

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。