loop back的用法和樣例：
例句
- An attack against a vulnerable application could echo back entrusted data as part of a response header.
針對脆弱的應用程序的攻擊可能導致將受信任數據作為響應標頭的一部分回送。 - Then the originating caller sends an acknowledgement back to the recipient, which is a bit unusual because the station that initiates the call also sends the acknowledgement.
然後，起始的呼叫者向接收者回送一個確認，這有點不尋常，因為起始通話的站也發送確認。
辭彙搭配
- loop back 回送
