"Towel" requires "a" or "the."
But they already have a a
Should be: This is not a towel
The sentence requires an article.
Dutch loan, Dutch loan, you can't moan and you can't groan.
this translation is not English - needs 'the' or 'a'
To have "a" you need "sehelai" or "satu" ... Grammar wise they are playing flip flop. Sometimes they follows, sometimes they do word for word translation