英语词汇class maintained certificate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	class maintained certificate
释义	class maintained certificate 简明释义船级保持证书专业释义 1 地球科学船级保持证书 2 交通运输工程船级保持证书
随便看	mantle-grade thorium nitrate mantle groove mantle heater mantle heat flow mantle irradiation mantle layer mantle leaf mantle length mantle line mantle loam mantle lobe mantle metasomatism Mantle, Mickey mantle movement mantle of glacial drift mantle of green mantle of rock mantle of soil mantle of the earth mantleoma mantle petrology mantle piece mantlepiece mantlepieces mantle plate

英汉双解词典包含3185865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。