Lò nung ở trong xưởng gốm.

Lò nung means a kiln or firing furnace/oven, especially one used to fire ceramics.

• lò = kiln, oven, furnace
• nung = to heat, fire, bake at high temperature

So lò nung is not just any oven; it is specifically something used for firing materials.

In Vietnamese, compound nouns often work as main noun + word describing function or purpose.

So:

• lò = the thing
• nung = what it does

That makes lò nung literally something like a furnace for firing/heating.

This is very common in Vietnamese. Compare:

• máy giặt = washing machine
• xe đạp = bicycle
• bàn ăn = dining table

The second word helps define what kind of thing it is.

Because là is usually used for identity or classification, not for location.

For example:

• Đây là lò nung. = This is a kiln.
• Anh ấy là giáo viên. = He is a teacher.

But when you want to say where something is, Vietnamese usually uses ở instead:

• Lò nung ở trong xưởng gốm. = The kiln is in the pottery workshop.

So in this sentence, ở does the job that English is in / is at does.

Ở trong means in or inside.

The two parts have slightly different roles:

• ở = marks location, roughly to be at/in
• trong = inside

So together, ở trong gives the idea of being inside somewhere.

It is very natural in Vietnamese to use both.
The sentence is literally close to:

• The kiln is located inside the pottery workshop.

Sometimes, yes, but the result changes slightly.

• Lò nung ở xưởng gốm.
  = The kiln is at/in the pottery workshop.
  This is fine and a little less specific.

• Lò nung ở trong xưởng gốm.
  = The kiln is inside the pottery workshop.
  This is more explicit.

Using trong without ở is less natural in this kind of simple location sentence. Vietnamese usually prefers ở trong here.

Xưởng gốm means pottery workshop, ceramics workshop, or sometimes ceramics factory, depending on context.

• xưởng = workshop, factory
• gốm = pottery, ceramics

Here, gốm functions like a noun modifying another noun, so xưởng gốm is literally a workshop for ceramics/pottery.

Not exactly in the English grammar sense. Vietnamese often puts one noun after another to modify it.

So:

• xưởng gốm = ceramics workshop
• bát gốm = ceramic bowl
• đồ gốm = ceramic ware / pottery items

You can think of gốm as a noun being used attributively, similar to how English uses a noun in phrases like coffee cup or stone wall.

Vietnamese does not have articles like English a/an and the.

So Lò nung ở trong xưởng gốm could mean:

• The kiln is in the pottery workshop
• A kiln is in the pottery workshop

Which one sounds best depends on context. In real use, listeners understand from the situation whether the speaker means a specific kiln or just mentions one kiln.

The pattern is:

noun phrase + location marker + place phrase

In this sentence:

• Lò nung = subject/topic noun phrase
• ở trong = location expression
• xưởng gốm = place

So the structure is basically:

[thing] + [is located] + [place]

A very literal gloss would be:

Kiln + located inside + pottery workshop

Yes, and that is a very natural alternative.

• Lò nung ở trong xưởng gốm.
  = The kiln is in the pottery workshop.
  Focus: the kiln and where it is.

• Trong xưởng gốm có lò nung.
  = There is a kiln in the pottery workshop.
  Focus: the existence of a kiln there.

So both are correct, but they highlight different information.

Not in this sentence.

Vietnamese often allows a bare noun in simple statements:

• Lò nung ở trong xưởng gốm.

You would usually add a classifier when using:

• a number: một cái lò nung = one kiln
• a demonstrative: cái lò nung này = this kiln
• extra emphasis in speech

So the sentence without a classifier is completely normal.