centre of gravity

point around which the weight of an object is evenly distributed 重心.

centime, centimeter, centimetre, centipede, CENTO (also Cento), central, central bank, central heating, central nervous system, central processor, central reservation, Central Standard Time, centralism, centralization, centralization, -isation, centralize, centralized, centrally, centre, centre (US center), centre spread, centre-bit, centre-fold, centre-forward (also centre), centre-half, centre-piece, centreboard, centrifugal, centrifugal force, centrifuge, centripetal, centrism, centrist, centurion, century, ceramic, ceramics, cereal, cerebellum, cerebral,