英语词汇back - up 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	back - up system
释义	back - up system 翻译备用系统
随便看	ninetynine ninety nine ninety-nine out of a hundred ninety-nines ninety-nine time out of a hundred ninety-nine times out of a hundred ninety - nine times out of a hundred Ninety-Ninety Rule ninety ninth ninety-ninth ninety-ninths ninetyone ninety one ninety-one ninety-percent ninety per cent pure nine types of jaundice nine types of needling nine types of retention nine types of stomachache ninety-plus ninety second ninety-second ninetyseven ninety seven

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。