Backlog
先写下记得的内容，再查看解释。不要填写个人信息。
查看解释
A backlog is a substantial quantity of work, cases, or orders that has accumulated over time and remains unprocessed. It does not describe a single delayed chore; it describes a collection of pending duties that have gathered into an ongoing burden.
Our clinic hired two evening clerks to clear the backlog of appointment requests.