解释
◎ 绿化 lǜhuà
(1) [make green by planting trees,flowers,etc.; cloth with greenage]∶使…变为绿色,广泛种植花草树木,使环境优美卫生,防止水土流失
植树造林,绿化祖国
(2) [afforest]∶种植树木花草
绿化山区