基本解释adj. (礼物等)非生日当天送的； 非生日那一天的同根派生 英汉例句She encounters all sorts of nonsense - including beautifully singing flower gardens, and outrageous croquet game and a Very Merry Unbirthday party! 他们邀请爱丽丝参加了一个令她毕生难忘的茶会。