Maalgraad is a compound noun, made from:
So maalgraad literally means something like grinding degree, and in natural English it is often rendered as grind size, grind setting, or coarseness depending on context.
Afrikaans makes a lot of compound nouns like this, and they are usually written as one word.
Yes. Koffiegronde is plural and means coffee grounds.
That is one reason the English translation often sounds natural with the plural grounds rather than something singular.
A useful thing to notice is that the article does not change in Afrikaans:
Afrikaans strongly prefers writing compound nouns as one word.
So:
This is very common in Afrikaans and can feel unusual to English speakers, because English often writes similar expressions as separate words, such as coffee grounds or grind size.
Yes, it is a very normal main-clause word order.
The structure is:
So the pattern is basically:
Subject + Verb + Object + Prepositional phrase
That is a standard Afrikaans sentence pattern.
Also, Afrikaans main clauses usually keep the finite verb in the second position. Since Ons comes first, verander comes immediately after it.
It can often mean either, depending on context.
Afrikaans simple present is broader than English present simple. It can be used for:
Usually the context tells you which meaning is intended.
If Afrikaans wants to emphasize an action in progress, it can use other constructions, such as besig om te, but the simple form Ons verander is completely normal.
The usual past tense would be:
Ons het die maalgraad vir die koffiegronde verander.
Afrikaans commonly forms the past tense with:
So here:
That is a very common Afrikaans pattern.