sagt…
Wörter und Sätze
hoeveel
how much, how many
onderzoek
-
- research, experiment, study, trial, test, survey
- investigation, inquiry, examination, survey
er
- there (unspecific to distance)
- it; him, her, them.
gedaan
past participle of doen
de
-
the (definite article, masculine and feminine singular, plural)
luchtkwaliteit
air quality
is
-
third-person singular present indicative of zijn; is, equals
onbekend
- unknown
- anonymous