Time: 02:55CZ - industry - wastewater - sewage disposal plant - tank - sediment - pollution
Time: 05:27CZ - technology - laboratory - microscope - samples - chemicals - technician - wastewater - research
Time: 03:28United Arab Emirates - travelling - Dubai - fountain - music - water - show
Time: 01:36CZ - animals - Český ráj - nature - swan - duck - pond - water - trees
Time: 09:33CZ - technology - home - ionizing - water - hydrogen - H2 - acidity - alkalinity - health
Time: 13:57CZ - technology - ionizer - water - pipe fitter - kitchen sink - health - filtration
Time: 11:31CZ - nature - Šumava - stream - forest - grassland - biotope - meadow - reeds - tree - water
Time: 06:20CZ - technology - water - biology - sewage disposal plant - cabel - wire
Time: 13:21CZ - city - Karlovy Vary - colonnade - fountain - swimming pool - carriage - horse - mineral water
Time: 04:02CZ - nature - garden - cottage - tree - cutting - firewood - chainsaw - water - tomato
Time: 05:47CZ - Olomouc - nature - rail - farm - fertilization - watering - flower