zhēn kǒng shè yǐng jī
pinhole camera
(Tw) miniature, concealable camera with a pinhole-sized lens
针
zhēn
variant of 針|针[zhen1], needle
孔
kǒng
hole
摄
shè
(bound form) to take in; to absorb; to assimilate
影
yǐng
picture
机
jī
(bound form) machine; mechanism