Copiamos números de registro en fórmulas de certificación.

Copiamos is the 1st person plural form of copiar (to copy), so it means we copy / we are copying / we copied, depending on context.

This form is ambiguous because it can be:

• present indicative: we copy
• preterite: we copied

So the surrounding context tells you which one is meant. In an isolated sentence like this, learners often understand it as a present/general action.

Spanish usually drops subject pronouns when the verb ending already makes the subject clear.

• copiamos already tells you the subject is we
• so nosotros copiamos is possible, but not necessary

You would add nosotros only for things like:

• emphasis: Nosotros copiamos números...
• contrast: Ellos archivan los documentos, pero nosotros copiamos los números.
• clarity, if needed

Spanish often omits articles in general statements, process descriptions, and especially in more administrative or instruction-like language.

So:

• Copiamos números de registro en fórmulas de certificación sounds general
• Copiamos los números de registro en las fórmulas de certificación would sound more like specific numbers and specific forms already known in the context

Both are possible, but the version without articles is more neutral and generic.

Literally, números de registro means numbers of registration / registry.

In natural English, that is usually rendered as:

• registration numbers
• registry numbers

Spanish very often uses the structure:

• noun + de + noun

where English often uses:

• a noun acting like an adjective
• or an adjective + noun

So:

• números de registro = registration numbers
• of registration is the literal structure, but not the most natural English translation

Because de registro is naming the type of number, not counting the registries themselves.

This is very common in Spanish. The second noun often stays singular in a noun + de + noun phrase when it works like a category label.

For example:

• números de registro
• tarjetas de crédito
• centro de salud

So the idea is not numbers of registries, but registration-type numbers.

If the meaning really were about several separate registries, plural might be possible in another context, but here singular is the normal choice.

Here en tells you the place or document where the information is written/copied.

So it can correspond in English to:

• in
• on
• into

depending on how English expresses it.

With verbs like writing, copying, noting, or entering information, Spanish often uses en for the destination:

• Escribimos el nombre en el formulario
• Anotaron los datos en la hoja
• Copiamos números... en fórmulas...

So en is completely natural here.

Because Spanish very commonly uses de + noun where English might prefer an adjective.

So:

• fórmulas de certificación = forms/formulae for certification or related to certification

This is especially common in formal, technical, and administrative Spanish.

English often compresses these ideas more than Spanish does. Spanish is happy to use de phrases to describe function, category, or purpose.

Yes. This is a very normal order in Spanish:

• Copiamos = verb
• números de registro = direct object
• en fórmulas de certificación = prepositional phrase showing where

So the structure is basically:

• We copy [what] [where].

You could change the order for emphasis, for example:

• En fórmulas de certificación copiamos números de registro.

That is still grammatical, but it puts more focus on where the copying happens.

Yes. The Spanish simple present often covers meanings that English splits into:

• we copy
• we are copying

So depending on context, copiamos can describe:

• a habitual action
• a general process
• something happening now

If Spanish wants to strongly emphasize the action is happening right now, it can use:

• estamos copiando

But copiamos is still very natural in many contexts.

It depends on the context.

Fórmula can mean things like:

• formula
• set wording
• formal wording
• sometimes a fixed or official form in a specialized context

For an everyday form to fill in, Spanish in Spain often more commonly uses:

• formulario
• impreso

So a learner might expect one of those words. However, in more formal or specialized language, fórmula can still make sense depending on what kind of certification document or fixed wording is meant.