彼の論文は晦渋で、専門家でも理解に苦しむ。
His paper is so abstruse that even specialists struggle to understand it.
晦渋な文体で知られる哲学者の著作を読み通した。
I read all the way through a work by a philosopher known for his obscure style.
翻訳の晦渋さが原文の魅力を損なっている。
The obscurity of the translation spoils the charm of the original.