Arcanum
n. 秘密, 奥秘, 秘方\\n[医] 秘方药
✅ 同义词
🗣️ 情景例句
Okay, I know just what you mean.
嗯，我明白你的意思。
I'm sorry, but it's just not possible.
抱歉，实在是爱莫能助。
For all his life, he had known that people suddenly disappeared from their villages.
他一生中，听说过有的人突然间在他们的村庄失踪了。