英语词汇gradation of age classes是什么意思，gradation of age classes的用法、释义、翻译、读音、例句、短语词组-英汉汉英翻译词典

单词	gradation of age classes
释义	gradation of age classes　龄级顺序
随便看	thiona-phthene thionalid thionamic acid thionamide grous thionaphthene thionaphthol thionarcon thionate thionazin thioncarbonic acid Thioneb thioneine thionic thionic thionic acid thionin thionine thionine thionizer thiono isomer thiono- thionone colour thionothiolic acid thionuric acid thionyl

英汉汉英翻译词典包含1679246条英汉翻译词条，基本涵盖了全部常用英语单词及常用语的翻译及用法，是英语学习及翻译工作的有利工具。