对于非授权用户其意义是隐蔽的数据。 Data whose meaning is concealed from unauthorized users.
产卵器管状结构，通常隐蔽的但有时延伸出腹部外部，雌性虫子用以放置蛋或卵 A tubular structure, usually concealed but sometimes extending outside the abdomen, with which many female insects deposit eggs.
机关枪从隐蔽的阵地开始射击。 Machine guns opened up from a concealed position.
