機器
adversity
aircraft
airfield
airliner
airplane
airport
aviation
blizzard
blower
car
cleaning
cleanup
clearing
climate
closed
cold
danger
delay
departure
equipment
frost
frozen
ice
outdoors
plow
preparing
removal
remove
road
runway
safety
service
snow
snow removal
snowblower
snowfall
snowplow
snowstorm
storm
taxiway
terminal
tractor
transport
transportation
travel
truck
vehicle
weather
winter