機器
aircraft
airplane
airport
antifreeze
bad weather
blizzard
chemical
cold
condensation
czech republic
de icing
defrost
deicing
delayed
departure
engine
frost
frozen
glycol
ice
in front of
jet
journey
liquid
people traveling
place of work
plane
prague
preparation
problem
protection
runway
safety
snow
spray
storm
taxiway
transportation
travel
vaclav havel airport prague
waiting
weather
wing
winter
working