kee Pluriel
Grundwasser
nappe phréatique
groundwater
lençol freático
d' Nitrater 1 sinn eng Belaaschtung fir d' Grondwaasser 1
https://lod.lu/uploads/examples/OGG/b1/b1c784d06456b9696251e5fd5ece935b.ogg
https://lod.lu/uploads/examples/AAC/b1/b1c784d06456b9696251e5fd5ece935b.m4a