maximum retention time的用法和樣例：
例句
- The holding tube is designed to establish a retention time for the product at the pasteurization temperature.
我們設計保溫管來確保產品在巴氏殺菌溫度時的保留時間。 - You see only the mailboxes that have been disconnected within the retention period that is specified for the mailbox database.
只能查看在為郵箱資料庫指定的保留時間內斷開連接的郵箱。
