When the wind draws ice-crystal clouds into long, fine filaments, they are called fibratus.
当风将含有冰晶的云朵吹成长长的细丝状时，毛状云便形成了。
The image shows purified-actin filaments (tens of microns long) that Dennis Breitsprecher grew on a dish when he was a biochemistry graduate student at Hannover Medical School in Germany.
这张照片展示了Dennis Breitsprecher在 德国汉诺瓦医学院做生化研究生时在培养皿中组装的纯化微丝（几十微米长）。
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.
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。
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