기원origin; beginning 단원chapter; unit 차원level 환원return; giving back; restoration 환원주의reductionism 고차원high level; high dimension 고차원적being high-level; being high-dimensional 고차원적high-level; high-dimensional 기원전B.C. 기원후A.D.

평소ordinary times 소재material 요소element; component; factor; requisite 탄소carbon 혈색소hemoglobin 형태소morpheme 화소pixel 활력소tonic; energizer; shot in the arm; refresher 효소enzyme 간소화simplification