الصبار هيبقى كويس طول ما المكان جاف.

A natural pronunciation is roughly:

es-sabbār hayib'a kuwayyis ṭūl ma-l-makān gāf

A word-by-word guide:

• الصبار → es-sabbār
• هيبقى → hayib'a
• كويس → kuwayyis or kwayyis
• طول ما → ṭūl ma
• المكان → el-makān
• جاف → gāf

A few pronunciation notes:

• In Egyptian Arabic, ج is usually pronounced like g in go, so جاف sounds like gāf.
• In يبقى / هيبقى, the ء sound is a glottal stop, so يبقى is not fully smooth like yibka; it is closer to yib'a.
• The ال in الصبار is pronounced es- because ص is a sun letter, so the l sound assimilates.

هيبقى means it will be or it will stay / remain in this sentence.

It comes from the verb يبقى, which in Egyptian Arabic often means:

• to remain
• to stay
• to be
• sometimes to become, depending on context

Here:

• هيبقى = ه + يبقى
• ه is the future marker, like will
• so هيبقى = will be / will remain

In this sentence, الصبار هيبقى كويس means the cactus will be fine.

Because this is Egyptian Arabic, not Modern Standard Arabic.

In MSA, you might say something like:

• سيكون الصبار بخير ما دام المكان جافًا

But in Egyptian speech, people much more naturally say:

• الصبار هيبقى كويس طول ما المكان جاف

So هيبقى is the everyday Egyptian way to express will be in many situations.

No. Here هـ is the future marker, not the pronoun هي meaning she.

This is a very common point of confusion.

• يبقى = he/it remains, is, stays
• هيبقى = will remain / will be

So the first part is:

• هـ = future marker
• يبقى = the verb

It just happens that هـ + يبقى looks like هيبقى.

Yes, كويس literally means good, but in Egyptian Arabic it is also very commonly used to mean:

• fine
• okay
• all right
• in good condition

So الصبار هيبقى كويس does not mean the cactus is morally good or nice. It means:

• the cactus will be fine
• the cactus will do well
• the cactus will be okay

That is very natural Egyptian usage.

طول ما means as long as.

In this sentence, it introduces a condition that stays true over time:

• طول ما المكان جاف = as long as the place is dry

It can also sometimes feel close to while, depending on context, but here as long as is the best match.

This is a very common Egyptian expression.

Examples:

• طول ما إنت بتذاكر، هتتحسن
  As long as you study, you’ll improve.

• طول ما الجو حلو، هنتمشى
  As long as the weather is nice, we’ll go for a walk.

Because Arabic often uses a nominal sentence in the present tense without a separate word for is.

So:

• المكان جاف literally looks like the place dry
• but it means the place is dry

That is completely normal.

After طول ما, Egyptian Arabic often keeps things simple like this:

• طول ما الجو حلو
• طول ما الباب مفتوح
• طول ما المكان جاف

You do not need an extra verb for is in the present.

Yes, جاف means dry, and it is understood in Egyptian Arabic.

In Egyptian speech, people may also sometimes use other everyday ways to express dryness depending on context, but جاف is a straightforward and correct adjective here.

Because this sentence sounds a little neat or textbook-like, جاف works well. In casual speech, wording may vary, but learners should definitely know جاف.

Also remember the Egyptian pronunciation:

• جاف → gāf, not jāf

Here الصبار is being treated as a singular noun meaning the cactus or cactus as a plant type in a general sense.

So the singular verb is correct:

• الصبار هيبقى كويس

If you were talking about multiple cacti, you would use a plural expression instead.

For example, depending on how you phrase it, you might say something like:

• نباتات الصبار هتبقى كويسة
• الصبارات هتبقى كويسة

But in your sentence, الصبار is singular/general, so هيبقى is the right form.

الـ is the definite article, equivalent to the.

So:

• الصبار = the cactus
• المكان = the place

In this sentence, English may or may not use the depending on how natural the translation is. For example:

• The cactus will be fine as long as the place is dry
• or more naturally in some contexts: A cactus will be fine as long as the place is dry

Arabic often uses the definite form in places where English might choose either the or a more general wording.

Because ص is a sun letter.

With sun letters, the ل of الـ is not pronounced separately. Instead, the following consonant is doubled.

So:

• underlying form: al-ṣabbār
• spoken form: aṣ-ṣabbār
• in Egyptian pronunciation, that comes out roughly as es-sabbār

That is why you hear es-sabbār, not al-sabbār.

Yes, it is understandable and natural enough, especially for a learning example.

A native speaker might also say similar things such as:

• الصبار هيعيش كويس طول ما المكان ناشف
• الصبار هيبقى تمام طول ما المكان جاف
• الصبار هيكون كويس طول ما المكان جاف

But الصبار هيبقى كويس طول ما المكان جاف is a solid, useful Egyptian-style sentence.

A couple of notes:

• هيبقى is very Egyptian and conversational.
• جاف is correct, though some speakers might choose a more colloquial adjective in everyday speech.

Yes, هيبقى can mean both, depending on context.

For example:

• هيبقى دكتور = he will become a doctor
• هيبقى هنا = he will be here
• هيبقى كويس = it will be fine / it will become okay

In your sentence, the meaning is clearly will be / will remain fine, not a dramatic change into something new.

Context tells you which shade is intended.

The structure is:

• الصبار = topic / subject
• هيبقى كويس = main statement: will be fine
• طول ما المكان جاف = condition: as long as the place is dry

So the whole sentence breaks down as:

• الصبار → the cactus
• هيبقى كويس → will be fine
• طول ما → as long as
• المكان جاف → the place is dry

A smooth literal understanding is:

The cactus will be fine as long as the place is dry.