Ada karat pada mesin tik itu.

In this sentence, ada means there is / there are or exists.

So Ada karat pada mesin tik itu literally means something like:

• There is rust on that typewriter.

A very common Indonesian pattern is:

• Ada + noun + location
• There is/are + noun + location

For example:

• Ada buku di meja. = There is a book on the table.
• Ada orang di luar. = There is someone outside.

Because Indonesian often uses ada to introduce the existence of something.

Compare:

• Ada karat pada mesin tik itu. = There is rust on that typewriter.
• Karat ada pada mesin tik itu. = Rust is on that typewriter.

The second version is possible in some contexts, but it sounds less natural as a basic statement of existence. Starting with ada is the most natural way to say that something is present.

Karat means rust.

It usually refers to the reddish-brown corrosion you see on iron or steel. In Indonesian, it behaves much like rust in English: it is often treated as a mass noun rather than a countable item.

So:

• Ada karat... = There is rust...
• Not usually a rust

You may also see related forms such as:

• berkarat = rusty / rusted
  • Mesin tik itu berkarat. = That typewriter is rusty.

Both pada and di can sometimes be translated as on / at / in, but they are used a bit differently.

In Ada karat pada mesin tik itu, pada sounds a little more formal or neutral when talking about something being on or attached to an object.

So:

• pada mesin tik itu = on that typewriter

You may also hear:

• Ada karat di mesin tik itu.

This is understandable and quite common in everyday speech, but pada can sound more precise in this kind of sentence, especially in writing or more formal style.

A rough guide:

• di = very common for physical location
• pada = often used in more formal language, abstract relationships, or when something is located on/at a thing in a slightly less purely spatial way

Mesin tik means typewriter.

It is made up of:

• mesin = machine
• tik = type / typing

So literally it is something like typing machine.

Indonesian often forms nouns by combining words like this, and they are commonly written as separate words.

Other examples:

• rumah sakit = hospital (literally sick house)
• kartu kredit = credit card
• mesin cuci = washing machine

Itu means that.

In mesin tik itu, it marks the noun as that typewriter.

One important thing for English speakers is that demonstratives in Indonesian usually come after the noun:

• mesin tik itu = that typewriter
• buku ini = this book

So unlike English, Indonesian normally says:

• noun + ini/itu
• not this/that + noun

Yes, it is very normal.

The structure is:

• Ada = there is
• karat = rust
• pada mesin tik itu = on that typewriter

So the full pattern is:

• Ada + thing + location

This is one of the most common ways to describe the presence of something.

Yes. That is a very natural translation.

Indonesian nouns do not usually mark singular/plural or use articles like a, an, or the in the same way English does, so context decides a lot.

Because karat is a mass noun, English often adds some naturally:

• There is rust on that typewriter.
• There is some rust on that typewriter.

Both are fine translations.

It is not the most natural version for this meaning.

The most natural sentence is:

• Ada karat pada mesin tik itu.

If you want the typewriter as the topic, a more natural alternative would be:

• Mesin tik itu berkarat. = That typewriter is rusty.
• Pada mesin tik itu ada karat. = On that typewriter, there is rust.

So Mesin tik itu ada karat may be understood, but it sounds awkward compared with the usual options.

They are similar, but not exactly the same.

• Ada karat pada mesin tik itu = There is rust on that typewriter.
  • This focuses on the existence of rust.
• Mesin tik itu berkarat = That typewriter is rusty / has rust on it.
  • This focuses on the condition of the typewriter.

So the first talks about rust being present; the second describes the machine itself.

Here, karat is a noun: rust.

That is why it comes after ada:

• Ada karat... = There is rust...

If you want an adjective-like meaning, Indonesian often uses berkarat:

• mesin tik berkarat = a rusty typewriter
• Mesin tik itu berkarat. = That typewriter is rusty.

So:

• karat = rust
• berkarat = rusty / rusted

A simple approximation is:

• AH-dah KAH-raht PAH-dah meh-SEEN teek EE-too

A few notes:

• ada = AH-dah
• karat = KAH-raht
• pada = PAH-dah
• mesin = meh-SEEN
• tik = teek
• itu = EE-too

Indonesian pronunciation is usually quite regular, so once you learn the sound system, reading gets easier.

Yes.

You can say:

• Pada mesin tik itu ada karat.

This means the same thing, but the emphasis shifts slightly toward the location first:

• On that typewriter, there is rust.

This kind of fronting is common when you want to highlight where something is.

No. It only tells us that rust is present.

It could mean a small amount or a lot; the sentence itself does not specify.

If you wanted to be more specific, you could add words such as:

• sedikit = a little
• banyak = a lot / much

For example:

• Ada sedikit karat pada mesin tik itu. = There is a little rust on that typewriter.
• Ada banyak karat pada mesin tik itu. = There is a lot of rust on that typewriter.