英语词汇engine oil licensing and certification system的读音、用法、中文释义、短语词组及例句-英汉双解词典

单词	engine oil licensing and certification system
释义	engine oil licensing and certification system 翻译发动机机油许可和认证制度
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英汉双解词典包含4367426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。