通过从天然来源，如木材，被囊动物(海参类)和某些种类的细菌中提取纤维素，研究人员可以制备不同尺寸和强度的晶体。
Deriving cellulose from natural sources such as wood, tunicate (ocean-dwelling sea cucumbers) and certain kinds of bacteria, researchers prepare crystals of different sizes and strengths.
海参是我国传统补益药，其中含有多种生物活性成分，如皂甙类和粘多糖类。
Sea cucumber is one of restoratives in traditional Chinese drug. It contains many biological active components, such as saponins and mucopolysaccharides.
海参是我国传统补益药，其中含有多种生物活性成分，如皂甙类和粘多糖类。
Sea cucumber is one of restoratives in traditional Chinese drug. It contains many biological active components, such as saponins and mucopolysaccharides.
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