英语词汇block signal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 signal
释义	block signaln.（名词） A fixed signal at the entrance to a railroad block, indicating whether or not trains may enter.火车行止信号：火车站入口处，指示火车是否可以进站的固定信号
随便看	soluble glass soluble RNA solubles solum solus solute solute solutes solution solution solutioned solutioning solutions Solutrean Solutrian solvable solvation solvations Solvay Solvay process solve solved solvent solvents solves

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