ADJ
难以看见(或发现)的;隐藏的
Hidden facts, feelings, activities, or problems are not easy to notice or discover.
例句
Under all the innocent fun, there are hidden dangers, especially for children...
在所有简单无害的娱乐项目背后都隐藏着危险,特别是对儿童而言。
The precise details of the origins of life remain hidden.
生命起源的确切详情仍是个谜。