00000nz a2200000n 4500 001 KSH2001007751 005 20021228000000 008 010406 n azknn|abn |a a|a | 150 ▼a양수(수)[陽數]▲ 450 ▼wr▼i영어▼apositive number▲ 550 ▼wg▼a수(숫자)[數]▲ 550 ▼a음수(수)[陰數]▲