Setelah tukang memperbaiki kunci pintu depan, kami bisa masuk ke rumah lagi.

Setelah means after.

It introduces the time clause setelah tukang memperbaiki kunci pintu depan = after the repairman fixed the front door lock.

Putting this clause first is very natural in Indonesian, just like in English:

• After the repairman fixed the front door lock, we could go into the house again.

You could also put it later:

• Kami bisa masuk ke rumah lagi setelah tukang memperbaiki kunci pintu depan.

Both are correct.

Tukang is a very common Indonesian word for a person who does a certain practical job or trade.

Depending on context, it can mean things like:

• repairman
• handyman
• worker
• craftsman
• tradesperson

In this sentence, tukang is understood as the person who fixed the lock. In more specific contexts, Indonesian may use a more exact job title, but tukang is very common in everyday speech.

The base idea is baik = good.

From that, Indonesian forms perbaiki = repair / fix. Then with the prefix memper-, you get memperbaiki, which is the normal active verb meaning to repair / to fix something.

So:

• memperbaiki = to repair, to fix

It is an active transitive verb, which means it normally takes an object:

• memperbaiki kunci = fix the lock

This is why memperbaiki is the natural form here.

It can mean either key or lock, depending on context.

In this sentence, kunci pintu depan most naturally means the front door lock, not the key.

Why?

Because:

• it is attached to pintu depan = front door
• memperbaiki a door lock is more natural than repairing a key
• the next clause says we could enter the house again, which fits the idea that the lock had been a problem

So here, kunci is best understood as lock.

Indonesian noun order is usually the opposite of English.

English often puts modifiers before the main noun:

• front door lock

Indonesian usually puts the main noun first, then what describes it:

• kunci pintu depan

You can think of it as:

• kunci = lock
• pintu depan = front door

So literally it is something like:

• lock [of the] front door

This noun-first pattern is very common in Indonesian.

Indonesian normally does not use articles like the or a/an.

So words like:

• tukang
• kunci
• rumah

can mean:

• a repairman / the repairman
• a lock / the lock
• a house / the house

The exact meaning comes from context.

In this sentence, English naturally uses the in translation, but Indonesian does not need a separate word for it.

This is a very important Indonesian distinction.

Both can mean we, but:

• kami = we, excluding the listener
• kita = we, including the listener

So kami bisa masuk ke rumah lagi means:

• we could enter the house again
• but you are not part of that we

If the speaker were including the listener, kita would be used instead.

Bisa means can, be able to, or could depending on context.

In this sentence:

• kami bisa masuk ke rumah lagi

means:

• we could enter the house again
• or we were able to get back into the house

It does not necessarily mean permission. Here it expresses ability or possibility after the lock was fixed.

Ke is a preposition meaning to.

So:

• masuk ke rumah = enter/go into the house

With masuk, Indonesian sometimes includes ke to emphasize movement into a place. In everyday usage, masuk rumah may also be heard in some contexts, but masuk ke rumah is very standard and clear.

So the pattern is:

• masuk ke + place

Examples:

• masuk ke kamar = go into the room
• masuk ke mobil = get into the car

Here lagi means again.

So:

• kami bisa masuk ke rumah lagi

means:

• we could enter the house again

It suggests that before the lock was fixed, they could not get in.

Be careful: lagi can also have other uses in Indonesian, such as indicating something is in progress in certain informal patterns, but here it simply means again.

The comma separates the introductory time clause from the main clause:

• Setelah tukang memperbaiki kunci pintu depan,
• kami bisa masuk ke rumah lagi.

This is similar to English punctuation after an opening clause like After he fixed the lock, ...

In Indonesian writing, this comma is normal and helpful for clarity, especially when the subordinate clause comes first.

Grammatically, kunci alone can mean key or lock, so in isolation there is some ambiguity.

But in this full sentence, lock is much more likely.

Reasons:

• kunci pintu depan strongly suggests the locking mechanism of the front door
• if the key were meant, speakers might choose wording that makes that clearer
• the result we could enter the house again fits a repaired lock very naturally

So although kunci is technically ambiguous as a dictionary word, the sentence as a whole points strongly to lock.

Yes. Indonesian word order is somewhat flexible, especially with time clauses.

For example, you can say:

• Setelah tukang memperbaiki kunci pintu depan, kami bisa masuk ke rumah lagi.
• Kami bisa masuk ke rumah lagi setelah tukang memperbaiki kunci pintu depan.

Both mean the same thing.

The first version puts more focus on the sequence of events: after X happened, Y became possible.
The second version starts with the main point: we could get in again.