英语词汇knock up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	knock up
释义	knock up PRACTISE v adv [I] (in games of tennis) to practise before beginning a game, by hitting the ball to each other （网球等运动中）赛前练习 The players have a couple of minutes to knock up before the match starts. 开赛前运动员有几分钟练球。
随便看	nights nightshirt nightspot nightstick nightwear nihilism nihilist nihilistic Nikkei nil nimble nimbleness nimbly nimbus NIMBY nincompoop nine ninepins nineteen nineteenth nineties ninetieth ninety ninja ninny

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