英文關鍵字
alternative
auto
automobile
background
belt
big
blue
boom
building
business
cargo
casing
cement
construction
container
crane
dawn
decking
dirty
drone
ecology
electricity
elevator
energy
engineering
environmental
equipment
evening
factory
freeway
general
global
green
harbor
heavy
highway
hoist
hook
horizon
hydraulic
industry
installing
lift
loading
machinery
material
mechanism
metal
mill
morning
outdoors
overpass
part
pollution
power
preparation
process
renewable
renovation
residence
resource
road
safety
shipping
silhouette
site
sky
steel
sunrise
sustainable
technology
telescopic
transport
turbine
under
warning
wind
windmill
work
workplace