英语词汇roller bolt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	roller bolt
释义	Definition of roller bolt in English: roller bolt noun historical A short upright projection on the splinter bar of a carriage to which the trace can be attached. Origin Late 18th century; earliest use found in William Felton (fl. c1794). Definition of roller bolt in US English: roller bolt noun historical A short upright projection on the splinter bar of a carriage to which the trace can be attached. Origin Late 18th century; earliest use found in William Felton (fl. c1794).
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Definition of roller bolt in English: