Arcana
n. 奥秘；神秘；深奥的知识（arcanum的复数）
✅ 同义词
🗣️ 情景例句
No. This is five-two-one double eight three-five.
不，这里是521-8835。
Who is the lady?
那位女人是谁？
I was only five when my father had taken me abroad, and that we eighteen years ago.
我5岁那年，父亲就带我出了国，那是18年前的事了。