ar·cane
adjective/ɑːˈkeɪn/
/ɑːrˈkeɪn/
(formal)- secret and mysterious and therefore difficult to understand
神秘的；晦涩难懂的 - the arcane rules of cricket
鲜为人知的板球规则
Word Originmid 16th cent.: from Latin arcanus, from arcere ‘to shut up’, from arca ‘chest’. - the arcane rules of cricket