英文關鍵字
architect
architecture
asia
asian
build
building
constractors
construction
discussing
energy
engineer
engineering
fabric
factory
foreman
fuel
gas
gasoline
hardhat
hat
industrial
industry
labor
machine
male
man
manufacturing
mechanic
metal
metalworker
oil
oilindustry
oilrefinery
operator
people
person
pipes
plant
pollution
protection
safety
steel
team
technology
two
walking
worker
workers
working
workplace