機器
black
blue
crank
cylinder
device
dirty
driving
engine
freight
gray
heavy
history
industry
iron
lamp
locomotive
metal
nobody
obsolete
old
oldfashioned
past
piston
power
rail
railroad
railway
red
retro
rivet
rod
row
rust
shiny
sky
stained
steam
steam locomotive
steel
strength
technology
track
train
transport
transportation
vehicle
vintage
wheel