This is the 5611th most frequent Dutch word.
merken
"Merken" means "to notice" or "to realize" in English.
In this sentence, "merken" is used in its sensing context, meaning to become aware of or perceive something.
Ik merk dat de lucht vandaag heel schoon is.
I notice that the air is very clean today.
Here, "merken" is used to express noticeability, indicating that the effects of effort or work can be observed.
Je kunt merken dat ze hard hebben gewerkt aan dit project.
You can notice that they have worked hard on this project.
In this case, "merken" is used in its marking or branding context, indicating the physical marking or labeling of items.