Maths is a mix of abstrusetheory and detailed calculations.
数学既有深奥的理论,又有精密的计算。
2
What he proposed was an abstrusetheory that none of us could understand.
他提出的深奥理论我们无人能懂。
3
In the western literary theory and cultural context of the 20th century, especially in the post-modern theory, the word text has become an abstruse concept.