ダークファイバーでしょう
dākufaibādeshō
1. Probably dark fiber.
Noun
#2917691
1. Probably dark fiber.
1. dark
1. fiber; fibre
1. glass fiber; glass fibre
1. it seems; I think
2. right?; don't you agree?
1. Fiber; Of fiber
1. With fiber; By fiber
1. Fiber.; It is.
1. With fiberglass; Made of fiberglass
1. Glass fiber; Of glass fiber