英文關鍵字
antibacterial
asphalt
china
cleaner
cleaning
concrete
corona
coronavirus
dirty
disinfect
disinfection
dust
epidemic
equipment
floor
gun
healthcare
hose
hospital
industrial
infection
jet
man
medical
nozzle
outbreak
outdoor
pandemic
paving
pipe
pressure
prevention
professional
protection
quarantine
sanitation
sidewalk
slabs
soap
spray
sweeper
tiles
virus
wash
washer
washing
water
wet
worker
wuhan