recondite
adj
(fml 文)
1 (of subjects) little known or understood; obscure (指学科)不甚了解的, 不甚理解的, 深奥的.
2 (of writers, etc) dealing with subjects that are little known or understood (指作者等)研究鲜为人知的或难以理解的专题的.
We were exposed to the latest theories on child care.
我们接触过有关幻儿保育的最新理论。
I've got a headache.
我头痛。
would be like trying to meet a friend in London without a pre-arranged rendezvous and absurdly wandering the streets in the hope of a chance encounter.