Manekin itu digunakan untuk latihan.

Itu often works like that, but in many sentences it also functions a lot like the in English.

So manekin itu can mean:

• that mannequin
• or, depending on context, the mannequin

Malay does not have a direct article exactly like English the, so words like itu are often used to make a noun sound definite or specific.

Because digunakan is a passive form.

• digunakan = is used / was used / used
• menggunakan = to use / uses / using in an active sense

So:

• Manekin itu digunakan untuk latihan.
  = The mannequin is used for training.

But:

• Pelajar menggunakan manekin itu.
  = The students use the mannequin.

A good quick way to think about it:

• meN- forms often focus on the doer
• di- forms often focus on the thing affected

Here, the sentence is about the mannequin, so the passive is natural.

It is made from:

• guna = use
• -kan = a suffix that often makes the verb more transitive or gives it a more specific verbal function
• di- = passive prefix

So:

• guna → gunakan = use
• gunakan → digunakan = be used / is used

In learner-friendly terms, digunakan means something like to be used.

Malay verbs usually do not change form for tense the way English verbs do.

So digunakan by itself does not specifically mark:

• present
• past
• future

The time usually comes from context or from extra words such as:

• sedang = currently
• telah / sudah = already
• akan = will

So this sentence could mean:

• is used for training
• was used for training
• sometimes even will be used for training

But without extra context, English speakers often translate it most naturally as is used for training.

Untuk means for.

Latihan means:

• training
• practice
• exercise, depending on context

So untuk latihan means:

• for training
• for practice

In this sentence, for training is probably the best natural translation.

Malay often does not need a separate word like English is in many sentence types.

In this sentence, the idea of is used is already contained in digunakan.

So Malay can say:

• Manekin itu digunakan untuk latihan.

without adding a separate word for is.

That is very normal in Malay.

No, it is a loanword, borrowed from a foreign source, ultimately related to mannequin.

Malay uses many loanwords, especially for modern, technical, or specialized objects.

So manekin is a normal kind of word to see in Malay. Depending on context, you might also see other related expressions, but manekin itself is understandable and standard enough.

Yes, it often can be, depending on context.

• Manekin digunakan untuk latihan.
  = Mannequins are used for training or A mannequin is used for training, depending on context

• Manekin itu digunakan untuk latihan.
  = The/that mannequin is used for training

Adding itu makes the noun more specific. Without it, the sentence can sound more general.

Yes. In a passive sentence, you can add the agent with oleh.

For example:

• Manekin itu digunakan oleh pelajar untuk latihan.
  = The mannequin is used by students for training.

Often, though, Malay leaves the agent out if it is obvious or unimportant. That is why the shorter original sentence sounds perfectly natural.

The word order is:

• Manekin itu = the subject/topic
• digunakan = passive verb
• untuk latihan = purpose phrase

So the structure is roughly:

noun + passive verb + purpose

That gives:

• Manekin itu digunakan untuk latihan.

This is a very normal Malay sentence pattern.

Yes, latihan can mean several related things, including:

• training
• practice
• exercise
• drill

The best translation depends on context.

For a mannequin, likely meanings are:

• training
• practice

So used for training is probably the most natural English version here.

One natural active version would be:

• Pelajar menggunakan manekin itu untuk latihan.
  = Students use the mannequin for training.

Or:

• Mereka menggunakan manekin itu untuk latihan.
  = They use the mannequin for training.

Compare:

• Manekin itu digunakan untuk latihan. = passive
• Pelajar menggunakan manekin itu untuk latihan. = active

Both are correct; they just focus on different parts of the message.