英语词汇up and down是什么意思，up and down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	up and down
释义	up and down　 adv.上下地, 到处, 前前后后, 来来往往
随便看	applied science applied sciences applied sciences applied sciences applied shock applied sociology applied statics applied statistics applied stratigraphy applied stress applied syatem analysis applied thread applied thrust applied voltage applied voltage applier applier applies applies applies applique applique applique applique applique circuit

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