hidden

adj. /ˈhɪdən/ B1

隐藏的；隐秘的

Kept out of sight or not easy to see or find.

仙境例句

Behind the long curtain was a hidden door that Alice had nearly walked past.

长帘子后藏着一扇门，爱丽丝差点就从旁边走过，没能发现它。