railroad
加入词篮iron
steel
subway
underground
tube
entrance
entry
exit
access
train
steward
stewardess
railcard
engine
station
waiting-room
timetable
luggage
carriage
ticket
transport
shuttle
carriage
carrier
container
tractor
boat
boating
Titanic
ship
ferry
canoe
sail
explorer
voyage
sailor
captain
port
bay
harbour
harbor
anchor
paddle
bow
cabin
channel
strait
pirate
flow
airport
apron
plane
harbour
airplane
aeroplane
aircraft
jet
helicopter
airway
loudspeaker
shuttle
pilot
captain
falling
decline
terminal
lounge
passport
visa
customs
airline
flight
cabin
wing
baggage
accident
danger
responsibility
collision
crash
conflict
damage
injury
hurt
harm
victim
emergency
sudden
ambulance
witness
passer-by
survival
help
aid
assistance
chip
shallow
life
lifeboat
