A scientist in lab is burning a knife for hygiene .
Schlüsselwörter
laboratory,
laboratory,
science,
scientist,
hygiene,
hygienic,
burn,
knife,
cutter,
test,
fire,
flames,
clean,
sterilize,
pasteurize,
glove,
gas,
glasses,
woman,
hand,
work,
experiment,
research,
researcher,
chemistry,
biology,
alcohol,
virus,
germ,
rubber,
cloning,
biotechnology,
device
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