跳读定位关键信息 — 英语词汇题
题目
快速阅读下列短文并跳读定位关键信息：
The university library opens at 8:00 a.m. on weekdays and at 9:00 a.m. on weekends. The reading room on the third floor closes at 10:00 p.m., while the borrowing desk stops service at 8:30 p.m. every day.
问题：What time does the borrowing desk stop service?