英文關鍵字
architect
architecture
build
builder
building
business
busy
concrete
construction
contractor
correct
engineer
engineering
equipment
hammer
hardhat
helmet
industrial
industry
job
labor
laborer
labour
male
man
manual
master
men
occupation
people
person
pin
pipe
placement
placing
reinforcement
safety
set
site
sparks
structure
tool
weld
welding
work
worker
workmen