something that is hidden is kept or located in a place where it cannot be seen Hidden dangers lurk in the ocean depths. 隐藏的危险潜伏在海洋深处。 A reporter wearing a hidden camera got footage of the abuse. 一名戴着隐形相机的记者得到了虐待的镜头。 This tiny museum is a hidden treasure of the city's Old Quarter. 这个小小的博物馆是城市旧城区的隐藏宝藏。
secret 秘密的；保密的；隐蔽的