dagger fibre

例句：

1. 1.The dagger fibres in the fabric are so fine that they can't be seen with the naked eye.
   织物中的匕首纤维非常细，肉眼无法看见。
2. 2.The dagger fibers in the fabric are so fine that they can't be seen with the naked eye.
   织物中的匕首纤维非常细，肉眼无法看见。
3. 3. The dagger fibers in the fabric are so fine that they can't be seen with the naked eye.
   织物中的匕首纤维非常细，肉眼无法看见。