secret
n. /ˈsiːkrət/ A2
秘密；奥秘
Known about by only a few people and kept hidden.
仙境例句
Behind the little door lay a secret garden that only the White Rabbit knew about.
小门后面藏着一个秘密花园，只有白兔知道。
原著这一句
Don’t let him know she liked them best, For this must ever be A secret, kept from all the rest, Between yourself and me.”
千万别让他知道她最喜欢那些东西，这必须成为永远瞒着其他人的秘密，只有你知我知。”
卡罗尔原著 · 第 12 章