英语词汇extension ringer怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	extension ringer
释义	extension ring 【摄影术】近摄接圈【数学】扩张环
随便看	drill capacity drill carrige drill chuck drill collar drill collars drill column drill core drill cores drill corps drill coulter drill cuttings drill doctor drill down drill downs drill drift drilled driller drillers driller's method drill extractor drill fittings drill floor drill footage drill for drill gauge

英汉双解词典包含483723条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。