细菌为了生存长出由细胞质膜（纤维素）构成的长长细丝，这些细丝们又相互重叠缠绕，最终形成一层纤维素构成的薄膜，漂浮在茶汤混合物的上面。
Bacteria added to the solution produce long filaments of cellulose that clump together to form thin mats of fabric that float on the top of the mixture.
采用由纤维素纤维形成的过滤介质过滤乙酸纤维素溶液。
A cellulose acetate solution is filtrated with a filter medium formed of cellulose fiber.
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