英文關鍵字
age
aged
architect
builder
building
clipboard
confident
construction
contractor
fifties
foreman
hard
hardhat
hat
helmet
high
house
industrial
industry
male
man
management
manager
middle
older
one
paperwork
person
safety
scaffolding
senior
site
standing
surveyor
vest
vis
visibility
walking
white
work
worker
working
yellow