air pollution
background
biological
chemical
city
concept
danger
dust
earth
environment
environmentalist
forest
gas mask
global
hazard
hazardous
hazmat
health
human
idea
industrial
industry
infectious
mask
person
pollution
protection
protective
red
respirator
responsibility
risk
safety suit
scientist
smoke
sustain
sustainability
sustainable
town
worker
定額
The red background depicts danger of city shrouded in industrial smog with people have to protect themselves by wearing masks and safety gear.の素材 [FY310195523876]
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