ab·struse
adjective/əbˈstruːs/
/əbˈstruːs/
(formal, often disapproving)- difficult to understand
费解的；难以理解的 - an abstruse argument
玄奥的论点
Word Originlate 16th cent.: from Latin abstrusus ‘put away, hidden’, from abstrudere ‘conceal’, from ab- ‘from’ + trudere ‘to push’. - an abstruse argument