kuukiire de kuukiatsu o chouseisuru.

I adjust the tire pressure with a bicycle pump.

Breakdown of kuukiire de kuukiatsu o chouseisuru.

• を: direct object particle
• で: means particle
• 調整ちょうせいする: to adjust
• 空気くうき入いれ: a bicycle pump

Questions & Answers about kuukiire de kuukiatsu o chouseisuru.

What does 空気入れ mean here?

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.

Why is で used after 空気入れ?

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

Why is を used after 空気圧?

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.