英文關鍵字
above
asphalt
building
cabin
cable
cargo
chain
construction
crane
day
equipment
helmet
human
hydraulic
industry
job
labourer
lift
load
lorry
machine
male
man
materials
metalware
motion
movement
outdoor
outside
platform
rope
rotate
sit
site
stand
steel
strength
structure
stud
sunny
technology
toughness
transport
truck
uniform
vehicle
wall
wheel
work
worker