air pollution
air quality
background
breathe
clean
cleaner
comfort
detector
disasters
dust
environment
fire
forest
good
happy
harmful
health
home
house
indoor
industry
interior
invisible
lifestyle
living
living room
man made
measuring
meter
monitoring
particle
particulate
particulate matter
pm 25
pm25
poisonous
pollution
problem
purification
quality
respiratory
room
sensor
small
smog
space
table
toxic
virus
welfare
定額
air quality sensor placing on a table indoor. sensor found small amount of air pollution of PM 2.5 the poisonous harmful particulate matter invisible dust from open field fire. man-made disasters.の素材 [FY310143103746]
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