单词 opto- 释义 opto-from Gr. ὀπτός ‘seen, visible’ and related words in ὀπτ-, used to form modern derivatives and compounds with the notion of ‘sight, vision’, or ‘optic’. See the following words. 英语词典包含277258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。