名词
中文翻译：原木素
同义词：
['lignin', 'lignocellulose例句：1. The wood was treated with a chemical to remove the protolignin.（木材被一种化学物质处理以去除原木素。）']
例句：
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1. The wood was treated with a chemical to remove the protolignin.
木材被一种化学物质处理以去除原木素。
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2.The process of extracting lignin from wood is called pulping.
从木材中提取木质素的过程称为造纸。
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3. The protolignin in the wood is what gives it its strength and durability.
木材中的原木素赋予它强度和耐久性。