yàobúshì zhèli de xìnhào bú tài hǎo, wǒ yě búhuì yíhuìr guānjī, yíhuìr yòu kāijī.

要不是 means if it weren’t for... or were it not for.... It introduces the cause of an unwanted or inconvenient situation.

So here, the speaker is saying something like: If it weren’t for the bad signal here, I wouldn’t keep turning it off and on.

It often sounds a little like an explanation, excuse, or complaint.

This is because of a very common tone change rule:

• 不 is normally fourth tone: bù
• But before another fourth-tone syllable, it changes to second tone: bú

That is why you get:

• 不是 → búshì
• 不太 → bútài
• 不会 → búhuì

So the written character stays the same, but the pronunciation changes for smoother speech.

This follows the tone change rule for 一:

• 一 is normally first tone: yī
• Before a fourth-tone syllable, it changes to second tone: yí

Since 会 is fourth tone (huì), 一会儿 becomes yíhuìr.

This is a very common rule, and you will see it in many other words too.

这里的信号 means the signal here or, in natural English, often the reception here.

The particle 的 connects a modifier to a noun:

• 这里 = here
• 这里的 = here’s / the ... here
• 这里的信号 = the signal here

So 的 is marking 这里 as something that describes 信号.

In general, 信号 means signal. But in this sentence, the most natural interpretation is phone signal / reception.

So although the Chinese says signal, a natural English translation would often use reception, as in The reception here isn’t very good.

不太好 literally means not too good, and in everyday Mandarin it often means not very good.

It sounds softer and more natural than 不好, which can sound more direct or blunt.

So:

• 不好 = bad / not good
• 不太好 = not very good / not so good

In this sentence, 不太好 sounds very natural.

也 often means also, but in this kind of sentence it is not always best translated literally.

In 要不是...，我也不会..., 也 helps express something like:

• I wouldn’t be doing this either
• I wouldn’t be doing this in the first place

It adds emphasis to the result and helps the sentence sound natural. Even if English might not always translate it directly, it is very common in Mandarin here.

No. Here 不会 does not mean don’t know how to.

会 can mean several things, including:

• to know how to
• will
• be likely to

In this sentence, because of the 要不是... structure, 不会 means wouldn’t.

So 我也不会... means I wouldn’t be doing...

It is about what would or would not happen, not about skill.

Here 一会儿...，一会儿... means one moment... and the next... or now... now..., showing alternating actions.

So:

• 一会儿关机，一会儿又开机 means
• one moment it’s off, the next it’s on again
• or I keep turning it off and then back on

This is different from a standalone 一会儿, which can also mean a little while or in a moment. In this sentence, it is the repeated pattern that matters.

又 means again.

So 一会儿关机，一会儿又开机 gives the feeling of a repeated cycle:

• turn it off
• then turn it on again

The 又 makes the repetition clearer and more vivid. Without it, the sentence would still be understandable, but 又 makes the back-and-forth action sound more natural.

No. They can be used for many devices and machines.

• 关机 = to turn off / shut down
• 开机 = to turn on / boot up

These are very common for:

• phones
• computers
• TVs
• other electronic devices

In this sentence, because of 信号, the listener will probably assume the speaker is talking about a phone or similar device.

Mandarin often leaves out objects when they are obvious from context.

So instead of saying something like turn off the phone, turn on the phone, Chinese can simply say:

• 关机
• 开机

The listener is expected to understand what device is meant. Here, it is probably the phone or whatever device is having signal trouble.

This kind of omission is very normal in everyday Mandarin.