Arcanum
n. 秘密, 奥秘, 秘方\\n[医] 秘方药
✅ 同义词
🗣️ 情景例句
Rock-a-bye, baby, on the tree top,
摇呀摇， 小宝宝， 在树梢，
Hunger will relish the plainest fare.
饥不择食。
Now that a tunnel ahs been built through the mountains, the Pass is less dangerous,
如今由于山里开挖了隧道，翻越山口已不那么危险了。