noun 下载 🔗分享 奥秘, 玄机，秘术。 Specialized knowledge that is mysterious to the uninitiated. Examples : "The ancient texts held the arcana of alchemy, secrets only understood by the most dedicated students. " 这些古老的典籍蕴藏着炼金术的奥秘，只有最专注的学生才能理解其中的玄机。 philosophy culture religion mythology supernatural 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 秘密，奥秘，玄机。 A mystery or deep secret. Examples : "The old diary contained the arcana of her grandmother's hidden past, secrets she had never shared with anyone. " 那本旧日记里藏着她祖母隐藏的过去的种种玄机，那些是她从未与任何人分享过的秘密。 mythology philosophy religion soul supernatural abstract mind 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 秘药，灵药。 An elixir or secret remedy. Examples : "The old herbalist claimed her tea contained special arcana for a good night's sleep. " 那位老药草师声称她的茶里含有能让人安睡的秘药。 medicine substance 与AI对话词汇游戏阅读练习
