kuukiire de kuukiatu wo tyouseisuru.

空気入れ means air pump or pump for putting air into something.

It is made from:

• 空気 = air
• 入れ = putting in / inserter

In everyday Japanese, 空気入れ is commonly used for things like a bicycle pump.

The particle で marks the tool, method, or means used to do something.

So:

• 空気入れで = with an air pump / using an air pump

This is a very common use of で:

• はしで食べる = eat with chopsticks
• ペンで書く = write with a pen

The particle を marks the direct object of the verb.

Here, the thing being adjusted is 空気圧:

• 空気圧を調整する = adjust the air pressure

So 空気圧 is what receives the action of 調整する.

空気圧 means air pressure.

It is made from:

• 空気 = air
• 圧 = pressure

This word is often used for things like:

• tire pressure
• pressure in inflatable items
• pneumatic pressure in some technical contexts

A common reading is くうきあつ.

調整する means to adjust, to regulate, or to fine-tune.

It sounds a little more precise than just saying change. It suggests setting something to an appropriate level.

So in this sentence, it implies:

• not just changing the air pressure randomly
• but adjusting it properly to the desired amount

Because it is a suru-verb, it consists of:

• 調整 = adjustment
• する = to do

The dictionary form is the basic, neutral form of the verb.

Depending on context, this can be used for:

• instructions in manuals
• labels or brief explanations
• general statements
• plain-form sentences

So 空気入れで空気圧を調整する。 can sound like:

• Adjust the air pressure with a pump.
• Use a pump to adjust the air pressure.
• One adjusts the air pressure with a pump.

In a manual or short instruction, Japanese often uses this plain form.

Yes, from an English point of view, the subject seems omitted.

Japanese often leaves out the subject when it is obvious from context. This sentence does not explicitly say:

• who is adjusting it
• what specific item the air pressure belongs to

Depending on context, the implied subject could be:

• you
• the user
• one
• someone

This is very normal in Japanese.

Not exactly. The key word is 空気圧を調整する, which means adjust the air pressure.

That suggests controlling or setting the pressure, not simply adding air.

If the idea were more directly inflate it with a pump, Japanese might use something like:

• 空気入れで空気を入れる = put air in using a pump
• ポンプでふくらませる = inflate with a pump

So this sentence is specifically about adjusting pressure.

Because these are compound nouns.

Japanese often combines nouns into one word:

• 空気 + 入れ = 空気入れ
• 空気 + 圧 = 空気圧

This is similar to English compounds like:

• air pump
• air pressure

So these are not full phrases with particles; they are vocabulary items.

No. In normal Japanese writing, spaces are usually not used between words like this.

It would normally be written as:

空気入れで空気圧を調整する。

The spaces are probably added only for learners to make the structure easier to see.

No, not in this sentence.

で has several meanings in Japanese, including:

• at/in a place where an action happens
• by/with/using for means or tools

Here, because 空気入れ is a tool, で means:

• with
• using
• by means of

So 空気入れで is definitely with an air pump, not at the pump.

It usually refers to a device used to pump air in, especially a simple air pump such as a bicycle pump. In context, it can sometimes be broader, but the basic image is a practical air pump.

If the context is more technical, Japanese might also use words like:

• ポンプ
• more specific equipment names

But 空気入れ is a very natural everyday word.