abstruse
/æbˈstruːs/adjective
- difficult to understand; obscure深奥难懂的; 晦涩的：
an abstruse philosophical inquiry.
玄奥的哲学探讨。
派生词
abstrusely
adverbabstruseness
noun词源
late 16th cent.: from Latin abstrusus 'put away, hidden', from abstrudere 'conceal', from ab- 'from' + trudere 'to push'.