英语词汇once-in-a是什么意思，once-in-a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	once-in-a
释义	DEFINITIVE EXAMPLES 权威例句Enter our competition and this once-in-a -lifetime experience could be yours! 参加我们的比赛，这个千载难逢的经历就属于你了！剑桥国际
随便看	braking action braking after release braking airscrew braking beam braking bench braking club braking disc braking distance braking effect braking element braking ellipse braking excitation contactor braking length braking lever braking leverage braking magnet braking maneuver braking measure braking mode braking moment braking radiation braking resistor braking rocket braking sensibility braking slope

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