On the train, on the plane, on the ship
On board
to do what you should
to toe the line
luggage you take with you on the plane
carry-on luggage
to search using a special mechine
scan
not following the official rules
against the regulations
something you must not to do
prohibited, not permitted
to take things abroad secretly or illegally
smuggle
as someone said
according to
an official way of doing things
policy
a place you are travelling to
destination
to take away something illegal
confiscate
a thing
item
