Na dworcu sprawdzam rozkład i widzę, że nasz pociąg odjeżdża z toru trzeciego.

Polish often uses na with places that function as public service points or activity areas, and dworzec is one of them.

So:

• na dworcu = at the station
• w dworcu = inside the station building (more literal, and less natural in this sentence)

In your sentence, the speaker means at the station in a general sense, not specifically inside the building, so na dworcu is the normal choice.

Yes. Here rozkład is short for rozkład jazdy, which means timetable / schedule.

So:

• sprawdzam rozkład = I check the timetable
• full version: sprawdzam rozkład jazdy

On its own, rozkład can also mean other kinds of layout, distribution, or arrangement in different contexts, but at a station it very naturally means the timetable.

Because Polish uses the present tense for actions happening right now, just like English does.

Also, unlike English, Polish does not have a separate tense for I am checking versus I check. The same form can cover both ideas:

• sprawdzam = I check / I am checking
• widzę = I see / I am seeing (though in English we normally just say I see)

So the sentence can describe what the speaker is doing at that moment.

Because in Polish, a clause introduced by że normally takes a comma before it.

So:

• widzę, że... = I see that...

This is a standard rule in Polish punctuation. English is less strict here, but Polish requires the comma.

Usually no. In this kind of sentence, że is normally required.

• widzę, że nasz pociąg odjeżdża... = correct
• widzę nasz pociąg odjeżdża... = not correct in standard Polish

English often drops that, but Polish usually keeps że when introducing a full clause.

Because Polish, like English, often uses the present tense for scheduled future events.

Compare English:

• Our train leaves from track 3.

That is grammatically present, but it refers to the future. Polish does the same:

• nasz pociąg odjeżdża = our train leaves / is departing

This is especially common with timetables, plans, and schedules.

Both can refer to the future, but they feel a bit different.

• odjeżdża = imperfective; often used for schedules, regular departures, or the event as part of a timetable
• odjedzie = perfective future; focuses more on the single completed event of departure

At a station, when checking a timetable, odjeżdża sounds very natural because it matches the idea of a scheduled departure.

Because z in the sense of from takes the genitive case.

The base form is:

• tor = track

After z:

• z toru = from the track

This is a very common pattern in Polish:

• z domu = from the house
• z miasta = from the city
• z toru = from the track

Be careful: z can also mean with, and then it often takes a different case. But here it means from, so it uses the genitive.

Trzeciego agrees with toru in case, gender, and number.

Base forms:

• trzeci tor = third track

But after z, the noun goes into the genitive:

• z trzeciego toru

In your sentence, the order is:

• z toru trzeciego

That word order is also possible, and it has a slightly more official or railway-style feel, like something you might hear in an announcement or see in transport language.

So:

• z trzeciego toru = more neutral everyday order
• z toru trzeciego = also correct, a bit more formal/official in tone

They are related, but they are not the same thing.

• tor = track (the rails)
• peron = platform (where passengers stand)

So a train can depart:

• z toru trzeciego = from track 3
• z peronu trzeciego = from platform 3

In real station language, both may be used, depending on what information is being highlighted.

Sometimes yes, but the meaning is not exactly the same.

• dworzec = station, especially as a transport hub or station building/complex
• stacja = station in a broader sense

So:

• na dworcu sounds very natural for being at a train or bus station
• na stacji is also possible, especially for a railway station in a more general sense

In many everyday situations, both can work, but na dworcu is especially natural if you picture someone at a main station checking the timetable.

Not completely. Polish word order is more flexible than English, because case endings show what role words play.

So you can move things around for emphasis. For example:

• Na dworcu sprawdzam rozkład i widzę, że nasz pociąg odjeżdża z toru trzeciego.
• Na dworcu sprawdzam rozkład i widzę, że z toru trzeciego odjeżdża nasz pociąg.

Both are possible. The difference is mainly about focus and style, not basic meaning.

The original version is very natural and straightforward.