英文關鍵字
action
antibacterial
asphalt
clean
cleaner
cleaning
cleanup
concrete
coronavirus
dirt
dirty
disinfect
disinfection
dust
equipment
floor
healthcare
hose
hosing
hygiene
industrial
infection
jet
man
nozzle
outdoor
pandemic
pressure
prevention
professional
protection
quarantine
sanitation
shine
sidewalk
slabs
soap
spray
sprayer
sun
sweeper
tiles
virus
wash
washing
water
wet
work
worker
wuhan