機器
action
clean
cleanup
clear
climate
cold
construction
cool
damage
difficult
dig
dumping
folding
frost
hard
heap
ice
landscape
machinery
mud
natural
nature
outdoor
pathway
problem
removal
rescue
revise
road
route
scraper
season
service
sidewalk
situation
smash
snowdrift
snowfall
snowy
temperature
track
transportation
tree
trespass
trouble
under
weather
white
working