英文關鍵字
ability
action
architecture
build
builder
concrete
construct
constructing
construction
contractor
device
employee
engineering
environment
exterior
hat
healthandsafety
industrial
industry
job
male
mechanic
men
metal
mining
occupation
operator
project
property
protection
protective
rock
scaffold
site
sitesurvey
skilled
steel
stone
surveying
surveyor
tool
tunnel
tunneling
under
wall
woman
work
worker
workhard
workman