英文關鍵字
activity
automobile
beam
builder
building
business
car
cargo
cement
concrete
construction
container
crane
delivering
delivery
development
driver
engineering
equipment
heavy
high
hydraulic
industrial
industry
lapse
lift
lifting
load
logistic
machine
machinery
metal
mobile
occupation
powerful
safety
service
shipping
site
steel
structure
technology
transport
transportation
truck
unloading
urban
vehicle
work
worker