fibrilla

例句：

1. 1. The fabric is made from silk, which is a natural fiber.
   这种织物是由丝绸制成的，是一种天然纤维。
2. 2. The artist used a fine filament to create the intricate patterns on the canvas.
   这位艺术家使用一根细丝来在画布上创作出复杂的图案。
3. 3. The filament was so thin that it could barely be seen with the naked eye.
   这根细丝太细了，肉眼几乎看不见。