happy birthdayWiktionary 原文英/ˈhæp.i ˈbɜːθ.deɪ/美/ˈhæp.i ˈbɝθˌdeɪ/释义感叹词interjection1Said or written to a person who is celebrating their birthday in order to convey the good wishes of the speaker or writer (literally, "may you have a happy birthday")动词verb1colloquial, transitiveTo wish (someone) a happy birthday.同族词派生词 3belated happy birthday·happy belated birthday·happy birthday in heaven