英语词汇block system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	block system
释义	block systemn. a system by which no railway train may enter a section that is not clear 闭塞系统
随便看	optical disc optical fibre optical glass optical illusion optical isomer optical isomerism optically optical microscope optic angle optic axis optician optic lobe optic nerve optics optima optimal optimally optimism optimist optimistic optimistically optimization optimize optimum option

英汉双解词典包含94788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。