filiform corrosion

例句：

1. 1. The spider's web is made up of many filiform threads.
   蜘蛛网由许多细丝组成。
2. 2. The plant has a filiform root system.
   这种植物具有细丝状的根系系统。
3. 3. The scientist discovered that the bacteria had filiform cells.
   科学家发现这种细菌具有细丝状细胞。