Antiseptik dan pinset itu di dalam peti pertolongan cemas.

Malay often leaves out the verb to be in simple present-tense sentences, especially in statements about location or identity.

So:

• Antiseptik dan pinset itu = the antiseptic and the tweezers
• di dalam peti pertolongan cemas = in the first aid kit

Malay does not need a separate word for are here.
A very literal gloss would be:

• Antiseptik dan pinset itu — in the first aid kit.

This is completely normal Malay.

Itu literally often means that, but in sentences like this it can also work a bit like the or those, depending on context.

In Antiseptik dan pinset itu:

• it may point out specific items already known in the conversation
• it can make the noun phrase feel more definite: the antiseptic and the tweezers

So itu is not always translated as a strongly demonstrative that/those. Sometimes it simply helps mark something as definite or already identifiable.

In Malay, when two nouns are joined by dan (and), itu can be placed after the whole noun phrase rather than repeated after each noun.

So:

• Antiseptik dan pinset itu
  means something like
• the antiseptic and the tweezers

You do not need:

• antiseptik itu dan pinset itu

That version is possible in some contexts, but it sounds more emphatic or more specifically separated: that antiseptic and those tweezers.

Di dalam means inside or in.

Breakdown:

• di = a preposition meaning at/in/on
• dalam = inside/interior

Together, di dalam means inside.

So:

• di dalam peti pertolongan cemas = inside the first aid kit

A learner should also notice that di as a preposition is written separately from the following word.

Yes, often you can.

Both are natural, though di dalam is a bit more explicit about physical interior location.

Compare:

• di dalam peti pertolongan cemas = inside the first aid kit
• dalam peti pertolongan cemas = in/inside the first aid kit

In everyday speech, dalam alone is very common.
Using di dalam can sound slightly clearer or more formal.

Good question. In Malay, di can be either:

1. a preposition meaning at/in/on → written separately
2. a passive prefix → written attached to the verb

In this sentence, di dalam uses di as a preposition, so it must be written separately.

Examples:

• di rumah = at home
• di dalam peti = in the box

But:

• dibuka = opened
• ditulis = written

So here, di dalam is definitely the location preposition, not a verb prefix.

Malay nouns usually do not change form for singular vs. plural. Number is often understood from context.

So:

• pinset can refer to tweezers as an item
• Malay does not need a special plural ending like English -s

Also, some objects that are grammatically plural in English are treated more simply in Malay. Pinset is commonly used for the tool itself, without worrying much about singular/plural form.

Malay can show plurality in other ways if needed, for example:

• reduplication: buku-buku = books
• number words: dua pinset = two tweezers/two pairs of tweezers, depending on context

But in this sentence, no extra plural marking is necessary.

Literally, it is something like:

• peti = box / case / chest
• pertolongan cemas = first aid / emergency assistance

So:

• peti pertolongan cemas = first aid kit

This is a good example of Malay noun order. The main noun usually comes first, and the modifier follows it.

Compare:

• peti pertolongan cemas = box of first aid
• English: first aid kit

So Malay often goes head noun + describing phrase, where English often reverses that.

Pertolongan cemas is the standard expression for first aid.

Breakdown:

• pertolongan = help/assistance
• cemas = emergency; in other contexts it can also relate to anxiety or distress

As a fixed phrase, pertolongan cemas means first aid or emergency aid.

So even if cemas can have related meanings in other situations, in this expression you should learn pertolongan cemas as a set phrase.

Yes. The sentence follows a very normal Malay pattern:

• [subject/topic] + [location]

So:

• Antiseptik dan pinset itu = the antiseptic and the tweezers
• di dalam peti pertolongan cemas = are in the first aid kit

This kind of structure is extremely common in Malay for location statements.

Yes, there are a few natural alternatives, depending on style and emphasis.

For example:

• Antiseptik dan pinset itu dalam peti pertolongan cemas.
• Antiseptik dan pinset itu ada di dalam peti pertolongan cemas.

The version with ada adds a sense of existence/location:

• ada di dalam = are located in / are there in

So all of these can work, but the original sentence is already perfectly natural.

They are loanwords, and that is very common in Malay, especially for medical or technical vocabulary.

• antiseptik comes from antiseptic
• pinset refers to tweezers/forceps

Malay uses many borrowed words, but they follow Malay grammar once they are part of the language. So even though the words may look familiar to an English speaker, the sentence structure around them is still fully Malay.