英文關鍵字
bounce
cargo
drive
engineering
fast
fix
fleet
force
heavy
highdefinition
industrail
industries
industry
journey
machine
mechanical
mechanism
metal
moving
old
parts
power
quick
rail
railroad
railway
rapid
rock
round
running
rust
rusty
shipping
speed
speedy
steel
stone
technology
track
traffic
train
transport
transportation
vibrant
wheel