機器
africanamerican
chemical
chemical plant
chemistry
control
danger
equipment
factory
female worker
hazard
hazardous
hazmat
industrial
industry
inspecting
laboratory
machinery
male
man
manufacturing
mask
medical
medicine
occupation
people
pharmaceutical
plant
production
protective
protective clothing
protective mask
protective suit
protective workwear
quality control
research
safety
science
scientist
supervising
technician
technology
two
uniform
woman
worker
working
workshop
workwear
young
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