kannai de syuuzouhin no syuuhuku wo simasu.

館内 means inside the building/facility or on the premises.

• 館 = a public building or institution, such as a museum, hall, or library
• 内 = inside

So 館内で means in the building or within the facility. In this kind of sentence, it often suggests a place like a museum.

The particle で marks the location where an action takes place.

Here, the action is します (do / carry out), so 館内で tells you where that action happens:

• 館内で = in the building
• 公園で = in the park
• 学校で = at school

So the sentence is saying that the restoration work is done inside the facility.

This is a noun phrase built with の.

• 収蔵品 = items in a collection / stored collection objects
• 修復 = restoration
• の links them

So 収蔵品の修復 means the restoration of collection items.

You can think of A の B here as B of A:

• 本の表紙 = the cover of a book
• 美術館の展示 = the exhibition of the museum / the museum's exhibition
• 収蔵品の修復 = restoration of collection items

収蔵品 refers to items that are held in a collection, especially by an institution such as a museum, archive, or gallery.

It is more specific than just objects or things. It has a formal, institutional feel.

Breaking it down:

• 収蔵 = storing/holding in a collection
• 品 = item/article

So 収蔵品 often means something like:

• collection item
• archived item
• museum piece
• item in the holdings

The particle を marks the direct object of the action.

In this sentence, the thing being done is 収蔵品の修復.

So:

• 収蔵品の修復をします
• literally: do restoration of collection items

This is a very common pattern in Japanese:

• 勉強をします = study
• 仕事をします = do work
• 掃除をします = do cleaning
• 修復をします = do restoration

Japanese often uses a noun + する pattern where English might use a verb.

Here:

• 修復 is a noun meaning restoration
• する / します turns it into to do restoration / to restore

This is extremely common in formal or technical language. It can sound more official or professional than using a simpler verb.

For example:

• 研究をする = to do research
• 説明をする = to give an explanation
• 修理をする = to do repairs
• 修復をする = to do restoration

Both relate to fixing things, but they are not exactly the same.

• 修理 = repair
  Used for fixing something broken so it works again.
• 修復 = restoration
  Used for restoring something to an earlier or proper state, often carefully and professionally.

In the context of museum objects, art, or cultural property, 修復 is much more natural than 修理.

Examples:

• 時計を修理する = repair a clock
• 絵画を修復する = restore a painting

So in this sentence, 修復 suggests careful restoration work on valuable collection items.

Japanese often leaves out the subject when it is understood from context.

So this sentence does not explicitly say:

• I do
• we do
• the staff does
• the museum does

Any of those could be understood depending on the situation.

This is very normal in Japanese. If the speaker, context, or surrounding sentences make the subject obvious, Japanese usually omits it.

It can mean more than one thing depending on context.

します can be used for:

• a present/factual statement
• a habitual action
• a future action

So this sentence could mean things like:

• We do restoration of collection items in the building.
• We will do restoration of collection items in the building.
• Restoration of collection items is carried out in the building.

Japanese often relies on context rather than verb endings to separate present and future.

Japanese word order is more flexible than English, but the basic pattern is:

[place] で [object] を [verb]

So:

• 館内で = in the building
• 収蔵品の修復を = restoration of collection items
• します = do

That gives:

館内で 収蔵品の修復をします。

Other orders are sometimes possible for emphasis, but this order is very natural and standard.

The readings are:

• 館内 = かんない
• で = で
• 収蔵品 = しゅうぞうひん
• の = の
• 修復 = しゅうふく
• を = を (pronounced お in speech)
• します = します

So the full sentence is read:

かんないで しゅうぞうひん の しゅうふく を します。

Yes, it is fairly formal.

Reasons:

• 収蔵品 is a formal, institutional word
• 修復 is also a formal/technical word
• します is the polite form of する

This kind of sentence would fit well in places like:

• museum descriptions
• workplace explanations
• brochures
• formal presentations
• notices or institutional writing

In casual everyday conversation, people might choose simpler words depending on what they mean.