as great and tunable a ring of bells as any in the world

Ag pleez Deddy won't you take us to the wrestling / We wanna see an ou called Sky High Lee / When he fights Willie Liebenberg / There's gonna be a murder / 'Cos Willie's gonna donner that blerrie yankee

At the posterior pole of the eye the sclera is pierced by the optic nerve, whose numerous bundles penetrate the coats of the eyeball and give to this portion of the sclera a cribrous appearance.

You translated the words correctly, but the sentences are very Yoda-like. Perhaps you should review your grammar.