生物大分子在生物体生�活动中具有重要的作用碳原子本身的化学性质使 它能够通过化学键连结成链状或环状从而形成生物大分子以上事实可以说明 Template




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tomski生物大分子在生物体生�活动中具有重要的作用碳原子本身的化学性质使 它能够通过化学键连结成链状或环状从而形成生物大分子以上事实可以说明 coloring