英文關鍵字
cctv
man
walks
hill
snowfall
camera
view
walking
winter
recording
privacy
security
protection
surveillance
monitoring
safety
watching
protecting
safe
technology
cam
cams
records
cold
road
snow
snowing
snowy
weather
blizzard
america
russia
exercise
chilly
snowflakes
storm
stormy
snowstorm
wind
city
town
crime
criminal
burglar
evidence
cops
police
male
person