1. 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.
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。

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2. 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.
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。

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3. A chordate marine animal of the subphylum Urochordata;a tunicate.
尾索动物尾索动物亚门的海生脊索动物;被囊动物

-- 来源 -- 英汉 - 短句参考

4. The soft outer wall lining the shell of a tunicate or barnacle.
有膜动物的柔软外皮被囊类动物或藤壶的壳的外层软壁

-- 来源 -- 英汉 - 短句参考

5. minute floating marine tunicate having a transparent body with an opening at each end.
身体透明、两端有孔并且有背囊的微小的浮游海洋动物。

-- 来源 -- 汉英 - 翻译参考