kono kikai ha kuuki wo suimasu.

It is read:

この きかい は くうき を すいます。

Word by word:

• この = this
• 機械 = きかい = machine
• は = topic marker
• 空気 = くうき = air
• を = object marker
• 吸います = すいます = sucks / inhales

A useful pronunciation note:

• The particle を is written を, but in modern Japanese it is usually pronounced お.

この is a demonstrative that must directly modify a noun.

So:

• この機械 = this machine

You cannot usually say この by itself to mean this one. For that, Japanese uses:

• これ = this one

So:

• この機械 = this machine
• これ = this one

This is similar to the difference between an adjective-like word and a pronoun in English.

は marks the topic of the sentence.

So この機械は means something like:

• As for this machine, ...

In natural English, we often just say This machine ..., so the translation may look like a normal subject. But grammatically, は is presenting この機械 as the thing we are talking about.

That means the sentence has a feeling like:

• Speaking of this machine, it sucks in air.

を marks the direct object of the verb.

The verb here is 吸います = to suck / inhale.
What is being sucked in? 空気 = air.

So:

• 空気を吸います = sucks air / inhales air

A simple pattern to remember is:

Noun + を + Verb

where the noun is the thing directly affected by the action.

Japanese usually places the verb at the end of the sentence.

So the basic order is often:

Topic / Subject + Object + Verb

In this sentence:

• この機械は = topic
• 空気を = object
• 吸います = verb

That is why the sentence ends with 吸います.

This is one of the biggest word-order differences from English.

吸います is the polite non-past form of the verb.
吸う is the dictionary form or plain form.

So:

• 吸う = plain
• 吸います = polite

Japanese often uses -ます forms in neutral polite conversation, textbooks, and formal situations.

Also, non-past in Japanese can cover:

• present habitual: This machine sucks air
• future: This machine will suck air

The exact time is understood from context.

Yes. 吸う is not only for people inhaling.

It can also be used for things like:

• machines sucking in air
• vacuum cleaners sucking up dust
• pumps drawing in air or liquid

So using 吸います for a machine is perfectly natural.

Depending on context, English might translate it as:

• sucks in air
• draws in air
• takes in air

But the Japanese verb is still 吸う.

Yes, but the nuance changes.

• この機械は空気を吸います。
  = As for this machine, it sucks air.
  This sounds like you are talking about the machine as a topic.

• この機械が空気を吸います。
  = This machine is the one that sucks air.
  This sounds more like identifying or emphasizing the subject.

So は is more topic-setting and neutral here, while が can sound more specific, contrastive, or like an answer to a question such as:

• Which machine sucks air?
• この機械が空気を吸います。

Japanese does not have articles like the and a/an.

So 機械 can mean:

• a machine
• the machine

Which one it means depends on context.

In this sentence, この機械 already means this machine, so there is no need for an article anyway.

No. Normal Japanese is usually written without spaces.

So this sentence would normally appear as:

この機械は空気を吸います。

Spaces are often added only in beginner materials to make the structure easier to see.

It can be either, depending on context.

Because 吸います is a non-past form, it can mean:

• a general/habitual fact: This machine sucks air
• a present action in some contexts
• a future action: This machine will suck air

If you specifically want to emphasize an ongoing action, Japanese often uses -ている:

• この機械は空気を吸っています。
  = This machine is sucking in air.

So the original sentence most naturally sounds like a general statement about what the machine does.