英文關鍵字
brush
business
clean
cleaner
cleanup
commercial
corridor
dirty
dust
employee
equipment
floor
hygiene
indoors
industrial
janitor
janitorial
job
machine
mop
office
operator
passage
polishing
professional
purity
scrubber
scrubbing
service
services
shop
sterile
store
supermarket
washes
water
wet
work
worker