I usually use for "what is that". The suffix "ka" is Japanese for question
here is the breakdown with correct spelling...
nan- what
desu- is
ka- ?
I'm pretty sure it just means "isn't that so?" or something like that. At the end of a sentence it could be like "..., right?" I could be wrong.
"des couteaux" means "knives" in English
'des visiteurs' means 'visitors' in English.
"des jumeaux" means 'twins' in English. (these are male twins; the feminine is 'des jumelles')
des chaussettes are 'socks' in French.
The English word for "Des Crayon" is "The Pencil".
"Eau des merveilles" would be translated "water from the marvels" in English.
markers
scissors
boots
"roi des ... (+ a plural noun)" means "king of ..." in French.
From the French Riviere Des Moines or River of the Monks.
It means English