英文關鍵字
cleaning
glass
window
maintenance
man
building
worker
cleanup
height
equipment
facade
glazed
office
risk
cleaner
rope
climb
contractor
danger
contemporary
modern
manual
job
high
dangerous
dirty
hanging
service
skyscraper
英文關鍵字
cleaning
glass
window
maintenance
man
building
worker
cleanup
height
equipment
facade
glazed
office
risk
cleaner
rope
climb
contractor
danger
contemporary
modern
manual
job
high
dangerous
dirty
hanging
service
skyscraper