Definition (溝通)
A phrase used at the beginning of a formal letter or notice when the exact recipient is unknown.
（正式書信或公告開頭用語）敬啟者
Address your cover letter to the hiring manager. Otherwise, begin it with "To whom it may concern."
請將你的求職信寄給招聘經理。否則，以「敬啟者」開頭。
On the table was an envelope with "To whom it may concern" written on it.
桌子上有一個信封，上面寫著「敬啟者」。
Her written statement was addressed "to whom it may concern".
她的書面聲明開頭是「敬啟者」。