The hard words are the ones that name something
Most of a certified translation for Chile is straightforward. Dates, places and plain sentences have Spanish counterparts and trouble nobody. The difficulty sits in the proper nouns and the labels: the name of the body that issued the paper, the title of a post held, the exact wording of an award or a licence.
Each of those belongs to one country's arrangements. A near-equivalent may well exist in Chile, but it carries its own duties, its own entry requirements and its own standing. Reaching for it would quietly change what the document says, and a translation holds no licence to do that on anyone's behalf.
Spanish, with the original kept in view
Chile works in Spanish, so a certified translation into Spanish in Sunderland is what a reader there needs. Where a term names an institution or a qualification, the usual approach keeps the original wording and sets a Spanish rendering beside it, so that nothing is lost from the page and nothing is invented for it.
Personal names get the same protection. They are reproduced exactly as the record prints them, including any accent or hyphen, because the person will be presenting identity documents alongside and the two have to agree character for character when somebody reads them together.
The certificate of accuracy and the choices behind it
The certification is the translator's certificate of accuracy, attached to the Spanish text and signed by a professional certified translator. It covers judgement as well as vocabulary: how a title was rendered, what was deliberately left in English, and where a short explanation was added in brackets for clarity.
No sworn Spanish translator in Sunderland comes into this route at any point. What stands behind the work is the certified translator's credential and their signature on the certificate, which is why rendering decisions are made consistently across a whole set of documents rather than page by page.
Per-page cost and turnaround
Work is priced at about £25 per page, over 2–3 business days as standard or 24 hours on the express option. A transcript crowded with course titles counts as the pages it occupies, and the extra care those titles need does not change that count or the rate applied to it.
Where a civil record is involved, ordering a fresh certified copy from Sunderland Registration Service is the sensible opening move. A newly printed copy shows the issuing details clearly, which is exactly the part of the sheet needing careful rendering, and the household's own record never goes near the post.