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	maxi maxi- maxilla maxillary maxim maxima maximal maximalist maximally maximization maximize maximizer maximum maxwell May may Maya maya Mayan mayapple may as well maybe May-bug May Day mayday

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