Saya makan biskuit di ruang tamu sambil minum susu hangat.

Sambil means while or at the same time as. It links two actions happening simultaneously.

So in Saya makan biskuit di ruang tamu sambil minum susu hangat, the speaker is eating biscuits while drinking warm milk.

A very common pattern is:

verb 1 + sambil + verb 2

For example:

• Saya belajar sambil mendengarkan musik = I study while listening to music.
• Dia berjalan sambil berbicara = He/She walks while talking.

In Indonesian, adjectives usually come after the noun they describe.

So:

• susu hangat = warm milk
• teh manis = sweet tea
• rumah besar = big house

This is different from English, where adjectives usually come before the noun.

So susu hangat is the normal Indonesian order, not hangat susu.

Di is a preposition meaning in, at, or on, depending on context. Here, di ruang tamu means in the living room.

It marks a location, not movement.

Compare:

• di ruang tamu = in the living room
• ke ruang tamu = to the living room

So di tells you where the action happens.

Indonesian does not normally use articles like a, an, or the the way English does.

So:

• biskuit can mean a biscuit, biscuits, or the biscuit(s) depending on context
• ruang tamu can mean the living room
• susu hangat can mean warm milk

Usually, context makes the meaning clear. Indonesian is often less explicit than English in this area.

Not by itself. Indonesian verbs do not change form for tense the way English verbs do.

So makan can mean:

• eat
• am eating
• ate
• was eating

The time is usually understood from context or added with time words such as:

• sekarang = now
• tadi = earlier
• kemarin = yesterday
• besok = tomorrow

Without extra context, this sentence can be understood as a general present or a simple description of what is happening.

In everyday Indonesian, makan and minum are very natural and common, even when they have objects.

So:

• Saya makan biskuit = natural
• Saya minum susu = natural

The forms memakan and meminum do exist, but they often sound more formal, more written, or more emphatic in many contexts.

For a learner, it is very useful to know that the shorter forms makan and minum are completely normal here.

Usually, yes. In a sentence like this, the default understanding is that the same subject does both actions.

So Saya makan biskuit ... sambil minum susu hangat means I am both:

• eating biscuits
• drinking warm milk

That is one reason sambil is so useful: it connects two actions by the same person very smoothly.

Sometimes, yes, if the subject is already clear from context. Indonesian often leaves out subjects in conversation when there is no confusion.

For example, if someone asks what you are doing, you might simply say:

• Makan biskuit di ruang tamu sambil minum susu hangat.

But if you are giving a full standalone sentence, especially for learners, keeping saya is clearer and more complete.

Some parts can move, but not everything.

For example, these are still natural:

• Saya makan biskuit sambil minum susu hangat di ruang tamu.
• Di ruang tamu, saya makan biskuit sambil minum susu hangat.
• Sambil minum susu hangat, saya makan biskuit di ruang tamu.

The location phrase di ruang tamu can move around fairly easily.

But inside smaller units, the order is less flexible:

• susu hangat must stay in that order, not hangat susu
• ruang tamu is a fixed expression

Ruang tamu literally means something like guest room/guest area, but in normal usage it means living room or sitting room, especially the room where guests are received.

It is a set expression:

• ruang = room/space
• tamu = guest

So even if the literal parts look a bit different from English, the natural translation is usually living room.

Not exactly. Hangat means warm, not fully hot.

So:

• susu hangat = warm milk
• susu panas = hot milk

English sometimes uses hot milk a bit loosely, but Indonesian makes a clearer distinction between hangat and panas.