機器
aerial
aerophotographing
cold
covered
day
digger
ditch
dredge
dredger
electrical
entrenchment
excavator
flying
fosse
frost
frosty
gas
high
horizon
landscape
line
nature
pipeline
power shovel
road
sap
scenic
season
seasonal
shadow
shovel
siberia
silence
sinuous
smoke
snow
snowy
top
track
transport
tree
trench
tundra
vehicle
view
weather
western
winter
zigzag