英语词汇back up是什么意思，back up的用法、释义、翻译、读音、例句、短语词组-英汉汉英翻译词典-觉斋网

单词	back up
释义	back up　 v.支持, 倒退, 裱
随便看	quarterback receptor receptor receptor destroying enzymes receptor inhibitor receptor of first order receptor of radiation receptor of second order receptor of third order receptor site receptor stimuli receptor-effector system receptorceiving receptoric atrophy receptorology receptors receptors receptors receptum recertification recess recess recess recess recess angle

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