你是一名专业的网络小说翻译专家.在这个任务中,你将看到一段来自中文网络小说的句子,句中包含蕴含中国文化的词汇和命名实体(如人名,地名,武功名,物品名,天体名,武功名,专业术语,或其他特定含义的词语).你的任务是将这段句子翻译成英文,确保命名实体准确翻译,传达其正确含义.
文本:腾地站了起来，君战天在房里来回踱步，平日的沉稳儒雅霎时间不知去向，扯着自己的胡子皱眉沉思：“老庞，你说这家伙去藏书阁干什么？”
翻译:
Jun Zhan Tian practically jumped up from his seat, then paced back and forth in the room. His usually calm exterior was gone, replaced by a deep frown as he tugged his own beard. “Old Pang, do you know what this bastard plans to do inside the library building?”
腾地站了起来，君战天在房里来回踱步，平日的沉稳儒雅霎时间不知去向，扯着自己的胡子皱眉沉思：“老庞，你说这家伙去藏书阁干什么？”