sae
noun [ C ] UK uk/ˌes.eɪˈiː/ us/ˌes.eɪˈiː/ (US also SASE)
（贴足邮票写明姓名地址的）回邮信封（stamped addressed envelope 或 self-addressed envelope 的缩写）
abbreviation for stamped addressed envelope or self-addressed envelope: an envelope with a stamp and your name and address on it that you send inside another envelope to an organization when you want a reply
Write to the above address, enclosing an sae. 信寄往上述地址，并附上贴足邮票、写明姓名地址的回邮信封。