tetuduki no nagare wo setumeisita.

It means the flow of the procedure or, more naturally in English, the steps in the process / how the procedure goes.

Breaking it down:

• 手続き = procedure, process, formal steps
• 流れ = flow, sequence, how something proceeds

So 手続きの流れ is not just a random flow in a physical sense. Here, 流れ means the order and progression of the steps.

の connects nouns. In this sentence, it shows that 流れ belongs to or is related to 手続き.

So:

• 手続き = procedure
• 流れ = flow / sequence
• 手続きの流れ = the procedure's flow, or more naturally, the flow of the procedure

This is one of the most common uses of の:

• possession
• category
• description
• relationship between two nouns

Here it is basically the English of.

Because 手続きの流れ is the direct object of the verb 説明した.

• 説明する = to explain
• what was explained? → 手続きの流れ
• therefore it takes を

So the structure is:

• 手続きの流れを説明した
• explained the flow of the procedure

説明した is the plain past form of 説明する, which means to explain.

So 説明した means:

• explained
• did an explanation
• gave an explanation

Because it is in the past tense, it tells us the explanation already happened.

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

So 手続きの流れを説明した。 could mean:

• I explained the procedure.
• He explained the procedure.
• She explained the procedure.
• They explained the procedure.

Japanese does this very naturally. If the speaker, listener, or topic is obvious, it is often omitted.

Yes, 流れ literally means flow, but in English flow of the procedure can sound a little formal or technical.

Depending on context, more natural translations might be:

• I explained the procedure.
• I explained the process.
• I explained the steps involved.
• I explained how the procedure works.
• I explained the sequence of the procedure.

So the literal meaning includes flow, but a natural English translation often uses steps, process, or sequence instead.

説明した is the plain past form. 説明しました is the polite past form.

They mean the same thing, but the level of formality is different:

• 説明した。 = plain / casual / neutral written style
• 説明しました。 = polite

You would choose based on the situation:

• casual conversation, notes, plain narrative → 説明した
• speaking politely, business situations, formal conversation → 説明しました

Yes, absolutely.

• 手続きの流れを説明した
• 手続きの流れについて説明した

Both are natural.

The difference is small:

• Aを説明する = explain A
• Aについて説明する = explain about A

The を version is a little more direct. The について version emphasizes the topic slightly more.

In many cases, both are acceptable.

Japanese nouns usually do not show singular/plural the way English does.

So 手続き could mean:

• a procedure
• procedures

But in this sentence, it most naturally sounds like the procedure or the process, depending on context.

Japanese often leaves number unspecified unless it really matters.

It is grammatically complete and natural, but it feels a little context-dependent because:

• the subject is omitted
• the listener may already know which procedure is being discussed

So it works well in contexts like:

• a report
• meeting notes
• a story
• a conversation where the topic is already established

For example, in a fuller sentence you might hear:

• 申請の前に、手続きの流れを説明した。
• Before the application, I explained the procedure.

So yes, it is natural, but it often relies on surrounding context.

Not exactly.

• 手続き = the procedure
• 手続きの流れ = the flow/order/sequence of the procedure

So 手続きの流れ focuses more on how the procedure unfolds step by step, not just the procedure as a general thing.

For example:

• 手続きを説明した = explained the procedure
• 手続きの流れを説明した = explained the sequence or flow of the procedure

The second one suggests more emphasis on the order of steps.

Those spaces are usually just for learning purposes.

Normal Japanese writing would be:

手続きの流れを説明した。

Japanese is normally written without spaces between words. Textbooks or beginner materials sometimes add spaces to make the sentence structure easier to see.