短语词组短语At Least Once Had 至少曾经拥有at all once 突然间deliver at least once 至少一次Waitress at least once 至少当一回服务生at -once payment [金融]立即付款;翻译;立即付款英语at least once 至少一次;至少有一次;投递保证了每个消息会被默认投递多次at t once 立刻 返回 at once