衍yǎn[書] Ⅰ ? (開展; 發(fā)揮) spread out; develop; amplify Ⅱ ? (多余) redundant; superfluous Ⅲ ? (低而平坦的土地) low and smooth land; low-lying flatland: 廣 ~ 沃野 a broad expanse of fertile flatland ? (山坡) hillside ? (沼澤) marsh; swamp; bog ◆衍變 develop; evolve; 衍射 {物} diffraction; inflection; 衍生 {化} derive; 衍生物 {化} derivative; derivant; derivate; ramification |