subway
加入词篮underground
tube
entrance
entry
exit
access
train
steward
locomotive
engine
turbine
station
luggage
carriage
ticket
transport
shuttle
carriage
freight
cargo
pickup
shipment
carrier
container
locomotive
tractor
boat
ship
steamer
vessel
tanker
liner
ferry
canoe
fleet
escort
sail
navigation
voyage
sailor
captain
dock
port
bay
gulf
harbor
inlet
anchor
paddle
blade
oar
bow
stern
deck
cabin
channel
pirate
drift
flow
airport
plane
aeroplane
aircraft
aviation
jet
helicopter
loudspeaker
amplifier
shuttle
pilot
captain
descent
decline
terminal
lounge
passport
visa
declaration
airline
flight
cabin
wing
flap
baggage
accident
danger
compensation
claim
offset
responsibility
liability
maintenance
patch
collision
crash
clash
conflict
impact
bump
