柯林斯词典lignin /ˈlɪɡnɪn/ 1. N a complex polymer occurring in certain plant cell walls making the plant rigid 木质素; 出现在植物细胞壁中，能使植物僵硬的复杂的聚合物 返回 lignin剑桥词典a substance found in the edges of some plant cells that makes the plant hard like wood 木质素 返回 lignin