Dok čekam autobus, sedim na stanici i čitam vesti na telefonu.

Here dok means while or as. It introduces an action happening at the same time as the main action:

• Dok čekam autobus = While I’m waiting for the bus

In other contexts, dok can also mean until, but in this sentence it clearly means while because both actions are happening at the same time.

They are in the present tense because the sentence describes actions happening right now or generally at the same time:

• čekam = I wait / I am waiting
• sedim = I sit / I am sitting
• čitam = I read / I am reading

Serbian does not have a separate form exactly like the English present continuous with am waiting, am reading, etc. The ordinary present tense often covers both:

• Čekam autobus. = I wait for the bus / I am waiting for the bus

The exact meaning depends on context.

Because Serbian usually does not need the subject pronoun when it is already clear from the verb ending.

• čekam already means I am waiting
• sedim already means I am sitting
• čitam already means I am reading

You could say ja čekam, ja sedim, ja čitam, but ja is usually added only for emphasis, contrast, or clarity.

Because autobus is the direct object of čekam, so it is in the accusative case. For an inanimate masculine noun, the accusative singular is usually the same as the nominative singular.

So:

• nominative: autobus
• accusative: autobus

That is why you get:

• čekam autobus = I’m waiting for the bus

If it were an animate masculine noun, the accusative would usually look like the genitive instead.

Because after na meaning on / at a location, Serbian uses the locative case.

• base form: stanica = station / stop
• locative singular: stanici

So:

• na stanici = at the station / at the bus stop

This is a very common pattern:

• na stolu = on the table
• na poslu = at work
• na fakultetu = at the faculty / university department

This is an important case contrast:

• na stanici = at the station → location, no movement
• na stanicu = to the station → direction or movement toward it

So in this sentence, sedim na stanici uses locative because the speaker is already there.

Compare:

• Idem na stanicu. = I’m going to the station.
• Sedim na stanici. = I’m sitting at the station.

Yes, vesti is grammatically plural, and it usually means news in a collective sense.

Serbian often treats news as a plural noun:

• vest = one piece of news, one item
• vesti = news, news items

So:

• čitam vesti = I’m reading the news

Also, vesti is the accusative plural here, but for this noun the accusative plural has the same form as the nominative plural.

In this sentence, na telefonu is the natural idiomatic choice for on the phone, meaning using the phone as a device/screen/platform.

So:

• čitam vesti na telefonu = I read the news on my phone

By contrast, u telefonu would usually suggest something more like in the phone, as if something is inside it, stored in it, or happening within it in a less idiomatic way.

For devices, Serbian often uses na where English also uses on:

• na telefonu = on the phone
• na računaru = on the computer
• na internetu = on the internet

Because Dok čekam autobus is a subordinate clause, and in Serbian it is normally separated by a comma from the main clause.

Structure:

• Dok čekam autobus, = while I’m waiting for the bus,
• sedim na stanici i čitam vesti na telefonu. = I sit at the stop and read the news on my phone.

This is similar to English, where a clause at the beginning is also often followed by a comma.

Yes, Serbian word order is fairly flexible, although some versions sound more natural than others.

The given sentence is neutral and natural:

• Dok čekam autobus, sedim na stanici i čitam vesti na telefonu.

You could also hear variations like:

• Dok čekam autobus, na stanici sedim i čitam vesti na telefonu.
• Sedim na stanici i čitam vesti na telefonu dok čekam autobus.

But the original order is smooth and easy to understand. Serbian often uses word order to change emphasis rather than basic meaning.

Because the sentence describes ongoing, repeated, or uncompleted actions, not single completed events.

The verbs here are:

• čekati = to wait
• sedeti / sediti depending on standard/variant usage, here sedim = to sit
• čitati = to read

These are imperfective because the speaker is in the middle of these actions. That matches the meaning of while very well.

If you used perfective verbs, the meaning would usually shift toward a completed event, which would not fit this sentence naturally.

Sedim specifically means I am sitting. It describes body position.

So this sentence literally says the speaker is:

• waiting for the bus,
• sitting at the stop,
• reading news on the phone.

If the person were standing, Serbian would use:

• stojim = I am standing

If you only wanted to say that someone is located somewhere, without saying whether they are sitting or standing, you might use a different structure altogether, such as sam na stanici = I am at the station / stop.

Yes. Serbian present tense can describe either:

1. something happening right now, or
2. something that happens regularly / habitually

So the sentence could mean:

• Right now: While I’m waiting for the bus, I’m sitting at the stop and reading news on my phone.
• Habitual: Whenever I wait for the bus, I sit at the stop and read news on my phone.

Context usually tells you which one is meant.