noun🔗Share木质素 A complex non-carbohydrate aromatic polymer present in all wood."The brown color of cardboard comes from the lignin that remains in the wood pulp used to make it. "纸板的棕色来自于用于制造它的木浆中残留的木质素。substancematerialchemistryplantbiologybiochemistrycompoundagriculturescienceChat with AIVocabulary GamePractice Reading
