英语词汇“roller-backer”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	roller-backer
释义	roller-backer \ˈ ̷ ̷ ̷ ̷ˌ ̷ ̷ ̷ ̷\ noun : a machine that backs a book by a roller action and forms shoulders but does not round the book except as the rollers perfect the round already imparted — compare rounder and backer
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英语词典包含332784条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。