ADJ
難以看見(或發現)的;隱藏的
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...
在所有簡單無害的娛樂項目背后都隱藏著危險,特別是對兒童而言。
The precise details of the origins of life remain hidden.
生命起源的確切詳情仍是個謎。