good command of, full use of

to make excellent use of, to have a good command of

(historical) jiedushi (regional military governor in China during the Tang dynasty and the Five Dynasties and Ten Kingdoms period)

(slang, mildly derogatory) Guy with a Camera (unsettling photographer)

camerawork

security camera

candid camera, hidden camera

throwing away one's unneeded possessions; taking an austere, minimalist approach to possessions

(historical) a government position during Nara period / (historical) a government position during Meiji period

(historical) a government position of ancient China.