jargon
n[U]
(often derog 常作贬义) technical or specialized words used by a particular group of people and difficult for others to understand 术语; 行话; 切口
scientific jargon 科学术语
She uses so much jargon I can never understand her explanations. 她用的术语太多, 我怎麽也听不懂她的讲解.