Moramo da shvatimo gde je peron.

A word-by-word breakdown:

• Moramo = we must / we have to
• da = a very common particle used before a present-tense verb, often where English would use to
• shvatimo = we understand / we figure out / we grasp
• gde = where
• je = is
• peron = platform (usually a train or bus platform, depending on context)

So the whole sentence means something like We have to figure out where the platform is.

Both are possible in Serbian, but da + present tense is extremely common, especially in everyday speech.

So:

• Moramo da shvatimo... = very natural, common
• Moramo shvatiti... = also correct, but often sounds a bit more formal or bookish to many learners

English often uses an infinitive after must or have to, but Serbian very often prefers this da + present structure.

Moramo is the 1st person plural present tense of morati = to have to / must.

So:

• moram = I must
• moraš = you must
• mora = he/she/it must
• moramo = we must
• morate = you all / you formal must
• moraju = they must

Here, moramo tells you the subject is we, even though Serbian often leaves the pronoun mi unstated.

Shvatimo is the 1st person plural present tense form of shvatiti.

In the structure da shvatimo, it means that we understand / that we figure out, but in natural English you would usually translate it as to figure out after moramo.

So:

• Moramo da shvatimo literally = We must that we understand
• Natural English = We must understand / We have to figure out

Also, shvatiti is typically a perfective verb, so it often suggests reaching understanding as a result: to grasp, to realize, to figure out.

Both relate to understanding, but they are not always identical.

• shvatiti often means to grasp, realize, figure out
• razumeti often means to understand in a more general sense

In this sentence, Moramo da shvatimo gde je peron sounds like:

• We need to figure out where the platform is
• We need to work out where the platform is

That is why shvatiti fits very naturally here.

Gde means where, and je peron means the platform is.

So gde je peron = where the platform is / literally where is the platform

Serbian often keeps this word order even inside embedded clauses. English changes the order:

• Serbian: gde je peron
• English: where the platform is

A learner might expect Serbian to do something like English subordinate clause word order, but Serbian does not need to change it that way.

Peron is in the nominative singular.

That is because it is the subject of the clause gde je peron = where the platform is.

You can think of that smaller clause like this:

• peron je = the platform is

Since peron is the thing being located, it stays in the nominative.

Peron usually means a platform at a train station or bus station.

Depending on context, it is most often understood as:

• train platform
• bus platform / bay at a station

So if you see this sentence in a travel context, it most likely means:

• We have to figure out where the platform is

Yes, Serbian word order is fairly flexible, but not every version sounds equally natural in every context.

The neutral version is:

• Moramo da shvatimo gde je peron.

You might also hear variations for emphasis, such as:

• Gde je peron, moramo da shvatimo.
  This puts more focus on where the platform is.

But for a learner, the original sentence is the best standard pattern to use.

Because Serbian is a language that often leaves subject pronouns out when the verb already shows who the subject is.

Here:

• moramo already means we must
• shvatimo also matches we

So adding mi is usually unnecessary:

• Moramo da shvatimo gde je peron. = normal
• Mi moramo da shvatimo gde je peron. = possible, but more emphatic, like We have to figure out where the platform is

A simple pronunciation guide:

• Moramo ≈ moh-RAH-moh
• da ≈ dah
• shvatimo ≈ SHVAH-tee-moh
• gde ≈ gdeh (with a hard g; the initial cluster may feel unusual at first)
• je ≈ yeh
• peron ≈ peh-RON

A rough full pronunciation:

moh-RAH-moh dah SHVAH-tee-moh gdeh yeh peh-RON

Gde is the standard form in many varieties of Serbian.

You may also see or hear:

• gdje in some regional varieties

So:

• gde je peron and gdje je peron can both be correct depending on the standard or regional usage

If you are learning standard Serbian as commonly written in Serbia, gde is the form you will most often use.

Both are possible translations, but figure out is often the more natural choice in context.

Why?

Because shvatiti often suggests arriving at an understanding, not just already possessing it. So the sentence often feels like:

• We need to figure out where the platform is
• We need to work out where the platform is

If the context is more abstract, understand can also work.