professional library的用法和樣例：
例句
- In a typical university or professional library, customers are not allowed into the stacks.
在典型的大學(xué)或者專(zhuān)業(yè)圖書(shū)館，讀者是不允許進(jìn)入書(shū)庫的。 - Wireless LAN is available throughout, and professional librarians are ready to offer assistance to users.
館內有專(zhuān)業(yè)圖書(shū)館員為使用者提供協(xié)助。
