英文關鍵字
away
blizzard
bucket
city
clean
cleaner
cleaning
cleansing
climate
cold
day
drifts
driving
excavator
forest
frost
frozen
heaps
helping
ice
male
man
men
moving
municipal
north
operative
plough
ploughing
plow
removal
remove
road
roads
scraper
season
shovel
shoveling
snow
snowdrift
snowfall
snowplow
storm
street
system
takes
territory
tractor
traffic
transport
transportation
uniform
weather
winter
work
workers
working