Certain fibers end, but most of the fibers are continuing.

一些纤维不够长 会有更多的纤维接上。

Eventually maybe those fibers end, but some new fibers have been introduced in the meantime.

这些纤维最后也会到头，但同时又加入了些新的纤维。

Woven cotton or polyester can't be recycled that way; the fibers end up too short.

拆解出来的纤维太短。