not known about by many people and difficult to understand
发音
例句
1. Her poems are modishly experimental in style and recondite in subject-matter. 她的诗在风格上是时髦的实验派,主题艰深难懂。 2. To a craftsman, the ancient article with recondite and scholastic words was too abstruse to understand. 可是对一个车轮师父而言,这些之乎者也的文言文是太深而难懂的。