concealed

隐藏的武器

a weapon that is hidden from sight, often carried for self-defense

隐藏的枪支

a firearm that is hidden from sight, often subject to legal regulation

被隐藏起来看不见的枪，例如藏在衣服下面。

隐藏式麦克风

a small microphone hidden to record conversations secretly

为秘密录音而隐藏起来的麦克风。

隐藏式照明

light sources that are hidden from view, used in interior design

光源被隐藏起来的照明

隐藏的不耐烦

hiding one's feeling of being annoyed or irritated by delay

隐藏因延迟而产生的烦躁或恼怒感