beranda no sentakubasami ga tarinakatta kara, taoru dake naka ni hosita.

More naturally, it means the clothespins on/for the balcony.

Here, の is not only for ownership. It can also show a broad relationship such as:

• location
• association
• purpose
• category

So ベランダの洗濯ばさみ does not mean the balcony somehow owns the clothespins. It means the clothespins associated with the balcony laundry area.

A similar idea:

• 台所のテーブル = the table in the kitchen

Because 洗濯ばさみ is the thing that is insufficient.

The pattern is:

• X が 足りない = X is not enough

So:

• 洗濯ばさみが足りなかった = there were not enough clothespins

Here, 足りない is describing the state of the clothespins, so が marks what is lacking or insufficient.

Using を would not work here, because 洗濯ばさみ is not the direct object of an action. It is the thing being described as not enough.

足りなかった means wasn't enough / weren't enough.

It comes from 足りない, which is the form commonly used to mean to be insufficient / not be enough. Its past form is:

• 足りない → 足りなかった

So in this sentence, the speaker is saying that at that time, the number of clothespins was insufficient.

A useful point: even though English distinguishes wasn't and weren't, Japanese does not change the verb/adjective form for singular vs. plural here. So 足りなかった works whether there was one clothespin missing or many.

から means because or since.

It connects the reason to the result:

• 洗濯ばさみが足りなかったから、…
• Because there weren't enough clothespins, ...

This is a very common pattern in Japanese:

• reason + から, result

You could also see ので in similar sentences. Compared with ので, から often sounds a bit more direct or conversational.

Yes. だけ means only / just.

So:

• タオルだけ = only the towels

It limits タオル, not the verb by itself. In other words, among the laundry items, the towels were the only ones that were hung inside.

A useful comparison:

• タオルだけ中に干した = I hung only the towels inside
• not I only hung the towels in the sense of that was the only action I did

Japanese scope can depend on what だけ is attached to, and here it is attached to タオル.

Because を is often omitted in natural Japanese when the meaning is already clear.

So this sentence could also be said as:

• タオルだけを中に干した

That version is also correct.

In casual speech and everyday writing, dropping を is very common, especially when:

• the object is obvious
• the sentence is easy to understand without it
• a particle like だけ is already attached

So タオルだけ中に干した sounds very natural.

Here, 中に means inside / indoors.

The sentence does not spell out exactly inside the house or inside the room, because Japanese often leaves that kind of information understood from context.

So 中に干した means something like:

• hung it inside
• dried it indoors

If the speaker wanted to be more explicit, they could say:

• 部屋の中に干した = hung it inside the room
• 家の中に干した = hung it inside the house

Also, 中 is a noun, and に marks the place where the towels were hung.

In laundry contexts, 干す means to hang something up to dry.

So 干した can be translated naturally as:

• hung up to dry
• dried by hanging
• sometimes simply dried, depending on the translation style

Japanese focuses on the action of hanging laundry in order to dry it, while English may choose either hang or dry depending on what sounds most natural.

So in this sentence, 干した does not just mean hung in a general sense like hanging a picture on a wall. It specifically refers to hanging laundry to dry.

Japanese very often omits the subject when it is clear from context.

So the sentence does not explicitly say:

• I hung
• we hung
• she hung

It simply says 干した, and the listener figures out the subject from the situation.

This is completely normal in Japanese. In a real conversation, it is often obvious who did it, so saying the subject would be unnecessary.

The same thing happens throughout Japanese grammar:

• subjects are often omitted
• objects are often omitted
• sometimes even locations are omitted

That is why this sentence can sound complete and natural without an explicit I.