英文關鍵字
window
robot
cleaner
machine
automatic
glass
smart
nobody
home
clean
tool
electric
housework
robotic
device
household
washing
equipment
housekeeping
vacuum
outside
cleaning
indoors
domestic
apartment
mop
brush
remote
closeup
service
technology
house
work
dirty
help
process
auto
move
automation
sunny
round
autonomous
appliance
transparent
building
cleanliness