only once in a lifetime英语标准发音:only once in a lifetime英式发音:美式发音:翻译中文一生只有一次only once in a lifetime - 基本释义[词典1]千载难逢only once in a lifetime - WEB词典only once in a lifetime一生只有一次 参考资料: 1.百度翻译:only once in a lifetime2.有道词典:only once in a lifetime3.爱词霸:only once in a lifetime