arcane

形容词 arcane:

1. requiring secret or mysterious knowledge

1. Arcane economic theories.
   鲜为人知的经济理论

ar.cane

adj.（形容词）
Known or understood by only a few:
晦涩难解的：仅被少数人知道或理解的：
例句：
arcane economic theories.See Synonyms at mysterious
鲜为人知的经济理论参见 mysterious

来源：
Latin arc3nus [secret]
拉丁语 arc3nus [秘密的]
from arca [chest]
源自 arca [胸]