Vi venter i ventesalen, indtil toget kører videre.

Danish often uses the simple present where English uses either simple present or present continuous.

So:

• Vi venter = We wait / We are waiting

In this sentence, the situation is happening now, so English naturally says are waiting, but Danish just uses venter.

Danish does not usually need a special -ing form the way English does.

They are related.

• venter = wait / are waiting
• ventesalen = the waiting room

Both come from the idea of waiting:

• vente = to wait
• sal = hall / room
• ventesal = waiting hall / waiting room
• ventesalen = the waiting room

So ventesalen is basically a compound noun built from vente + sal.

i means in here.

• i ventesalen = in the waiting room

This is the normal preposition because you are physically inside that room.

So:

• i huset = in the house
• i bilen = in the car
• i ventesalen = in the waiting room

Because -en is the definite ending for many common-gender nouns in Danish.

• en ventesal = a waiting room
• ventesalen = the waiting room

Unlike English, Danish often adds the directly to the end of the noun instead of using a separate word.

Other examples:

• en bil → bilen = the car
• en station → stationen = the station

Because the sentence means the train, not just train.

• et tog = a train
• toget = the train

This is the neuter noun pattern:

• et hus → huset
• et tog → toget

So indtil toget kører videre means until the train continues/moves on.

Because indtil toget kører videre is a subordinate clause.

• Main clause: Vi venter i ventesalen
• Subordinate clause: indtil toget kører videre

In standard Danish writing, subordinate clauses are commonly separated by a comma.

So the comma helps show the structure:

• We wait in the waiting room, until the train moves on.

Here indtil means until.

• Vi venter ... indtil toget kører videre = We wait ... until the train continues

It is not the same as til in every situation.

• til often means to, until, or for, depending on context
• indtil specifically emphasizes up to the time when

In time expressions, indtil is often clearer and more exact for until.

Because after indtil, you have a subordinate clause, and subordinate clauses use normal subject + verb order.

So:

• toget = subject
• kører = verb

That gives:

• indtil toget kører videre

This is different from a main clause, where Danish usually has verb-second word order.

Compare:

• Main clause: Toget kører videre
• Subordinate clause: ... indtil toget kører videre

In this case, the order looks the same because the subject comes first anyway, but the important point is that indtil introduces a subordinate clause.

kører means drives / runs / goes depending on the thing involved.

With a train, kører is often used for runs, goes, or moves.

videre means on, further, or ahead.

So kører videre means something like:

• continues on
• moves on
• goes on
• keeps going

For a train, a natural English translation is often continues or moves on.

Danish often uses the present tense for future events when the meaning is clear from context.

So:

• toget kører videre can mean the train continues on
• In context, it may also be understood as the train will continue on

This is very common, especially with schedules, plans, and expected future events.

Compare:

• Vi rejser i morgen = We are travelling tomorrow
• Toget går klokken otte = The train leaves at eight

For English speakers, kører can be tricky because of ø.

A rough guide:

• kør- has a vowel somewhat like the vowel in French peur or German hören
• -er is a weak ending, often like a soft uh

Very roughly, you might think of it as something like KUR-uh, but that is only approximate.

Important point:

• ø is not the same as o
• r often affects the vowel sound in Danish

If you are learning pronunciation, it is best to hear it from native audio, because Danish vowels are hard to guess from spelling alone.

Yes, you may hear both, but they are not always identical in tone or usage.

• ventesal = waiting hall / waiting room
• venterum = waiting room

ventesal can sound a bit more like a station or larger public waiting area.
venterum is also common, especially for places like doctors' offices.

In this train-station context, ventesalen sounds very natural.