英语词汇principal focus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	principal focus
释义	principal focus 【物理学】主焦点[亦作 focal point]
随便看	unsewed unsewed或-sewn unsex unsexing unshackle unshackled unshackles unshackling unshadowed unshaped unshapen unsheathe unsheathed unsheathes unsheathing unshell unshelled unshift unshifted unship unshipped unshipping unships unshroud unsicker

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。