Once But

Once But Opportunity knocks but once 翻译 want crying but only once for you What apperars once in a minute,twice in moment,but not once 请教一个单词not once在这句中的意思.But not once did he say . "You only live once,but if you do it right,once is enough." We only live once,but if we work it right once is enough这句话出 求翻译：Opportunity knocks but once．啥意思呢 谁帮我翻译一下…opportunity knocks but once. 英语翻译olympic official.but eddie insisted and ,once more,took I look you once I know I like you But that's a lot of money ,but,just this once