英文關鍵字
alternative
architect
architecture
blueprint
builder
building
business
businessman
concept
construction
eco
ecology
electric
electricity
energy
engineer
engineering
environment
equipment
field
generate
green
happy
hardhat
helmet
industry
job
man
mill
nature
occupation
people
plan
plant
power
project
renewable
safety
service
sky
symbol
system
technician
technology
turbine
web
windmill
work
worker
working