An inspector stands in the river stream and checks the quality and purity of the water
Schlüsselwörter
inspector,
stand,
river,
stream,
check,
quality,
purity,
water,
ecology,
engineer,
laboratory assistant,
check,
datum,
record,
analysis,
bloom,
accuracy,
men at work,
hat,
safety,
vest,
standing,
outdoors,
work,
site,
equipment,
protective,
gear,
industrial,
job,
project,
clothing,
creek,
flow,
boot,
reflective,
jacket,
uniform,
helmet,
professional,
male,
person,
adult,
labourer,
wading,
regulation,
yellow,
caution
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