英文關鍵字
activity
animated
animation
background
backhoe
builder
building
buildings
bulldozer
business
construction
contractor
crane
cranes
dawn
development
engineering
equipment
excavation
excavator
heavy
high
hydraulic
industrial
industry
iron
job
machine
machinery
professional
render
rise
silhouettes
site
sky
sunset
technology
transport
transportation
truck
utility
vehicle
work
workplace
yard
yellow