Η ανακοίνωση έλεγε ότι ο τερματικός σταθμός αυτής της γραμμής είναι ο επόμενος.

Έλεγε is the imperfect of λέω and often means was saying or kept saying.

In a sentence like this, Η ανακοίνωση έλεγε..., Greek is treating the announcement as something whose message was being stated/displayed, rather than as one single completed act of speaking.

So:

• έλεγε = said / was saying
• είπε = said in the sense of said once

With things like signs, notices, labels, and announcements, Greek often uses the imperfect in a way that sounds very natural, even where English might simply use said.

Because Greek often keeps the verb in the subordinate clause in the present when the statement is still valid at that moment or is being reported as content.

So in:

• Η ανακοίνωση έλεγε ότι... είναι...

the announcement said that the terminal station is the next one.

This is similar to English, where you can say either:

• The announcement said that the next stop is the terminal
• or ...was the terminal

Greek very naturally allows είναι here. It reflects the content of the announcement directly, almost as if repeating its words.

Ανακοίνωση means announcement.

It can refer to:

• a spoken public announcement, for example in a train or station
• an official notice
• sometimes a formal statement

In this sentence, it most naturally means a public transport announcement.

Also note:

• η ανακοίνωση = the announcement
• It is a feminine noun.

Yes, it is basically a fixed transport expression.

• τερματικός = terminal / final
• σταθμός = station

Together, τερματικός σταθμός means:

• terminal station
• terminus
• last stop / end of the line depending on context

In transport Greek, this is a normal way to refer to the final station of a route.

Because this phrase means of this line, and Greek expresses that with the genitive.

Breakdown:

• γραμμή = line
• της γραμμής = of the line
• αυτής = of this

So:

• αυτής της γραμμής = of this line

Both the demonstrative (αυτής) and the noun phrase (της γραμμής) are in the genitive because they belong together.

This is very common in Greek:

• το τέλος αυτής της ταινίας = the end of this film
• το χρώμα αυτού του αυτοκινήτου = the color of this car

Because the basic noun is:

• η γραμμή = the line

It is a feminine noun, so the related words must match it in gender, number, and case.

That is why you get:

• αυτή η γραμμή = this line
  but
• αυτής της γραμμής = of this line

The forms change because of case, but the noun remains feminine.

Because ο επόμενος is functioning like a noun phrase here: the next one.

Greek often uses:

• article + adjective

to mean the ... one.

So:

• ο επόμενος = the next one (masculine)
• η επόμενη = the next one (feminine)
• το επόμενο = the next one (neuter)

Here it is masculine because it refers back to ο τερματικός σταθμός, which is masculine.

Because it agrees with ο τερματικός σταθμός.

In Greek, adjectives match the noun they describe in:

• gender
• number
• case

So:

• ο σταθμός is masculine singular
• therefore ο επόμενος is also masculine singular

Even though English says the next one, Greek still has to show what kind of one it is grammatically.

It refers to ο τερματικός σταθμός.

The structure is:

• ο τερματικός σταθμός ... είναι ο επόμενος

Literally:
the terminal station ... is the next one

Meaning:
the next station/stop is the terminal

Greek is not repeating σταθμός in the second half because ο επόμενος already stands in for it.

A fuller version could be:

• ο τερματικός σταθμός ... είναι ο επόμενος σταθμός

But Greek normally leaves the repeated noun out.

Yes. Here ότι introduces a content clause, just like English that.

So:

• Η ανακοίνωση έλεγε ότι... = The announcement said that...

It introduces what the announcement said.

Be careful not to confuse:

• ότι = that
• ό,τι = whatever / anything that

The second one has a comma-like mark in spelling and means something different.

Yes, Greek word order is flexible, though the original sentence is very natural.

This version:

• Η ανακοίνωση έλεγε ότι ο τερματικός σταθμός αυτής της γραμμής είναι ο επόμενος.

is neutral and clear.

You might also hear variations for emphasis, such as moving pieces around, but the standard order here is straightforward:

1. subject: Η ανακοίνωση
2. verb: έλεγε
3. clause introduced by ότι
4. subject of that clause: ο τερματικός σταθμός αυτής της γραμμής
5. verb: είναι
6. complement: ο επόμενος

So yes, word order can vary, but this sentence is already in a very normal form.

Literally, σταθμός means station.

But in real transport usage, translations can depend on context. In English, the natural rendering may sometimes be:

• station
• stop
• terminal
• end of the line

For example, if the announcement is on a metro or railway, station is very natural. If the meaning is more practical for passengers, English may phrase it as the next stop is the last stop even though Greek uses σταθμός.

So the Greek word itself is station, but the best English translation may vary.

Not literally. Grammatically it is of this line, because it is genitive.

So:

• ο τερματικός σταθμός αυτής της γραμμής

means:

• the terminal station of this line

In English, that may sometimes be expressed more naturally as:

• this line’s terminal station
• the terminal for this line

But the Greek structure itself is possessive/associative: of this line.

A fairly literal breakdown would be:

• Η ανακοίνωση = the announcement
• έλεγε = was saying / said
• ότι = that
• ο τερματικός σταθμός = the terminal station
• αυτής της γραμμής = of this line
• είναι = is
• ο επόμενος = the next one

So a very literal version is:

The announcement said that the terminal station of this line is the next one.

That is a bit stiff in English, but it helps show how the Greek sentence is built.