英文關鍵字
adult
back
body
catching
caucasian
cold
conditions
conifer
drifts
endurance
exercising
extreme
falling
fitness
footpath
footprints
forest
glade
haired
hardening
hardens
impassability
increases
jogging
landscape
long
male
man
men
mowgli
nature
outdoor
outerwear
park
patency
path
people
person
pine
road
run
runner
running
runs
savage
season
seasoned
shot
snow
snowdriftsnnit
snowfall
snowflake
snowy
sport
stamina
stuck
tough
trail
training
trees
undressed
view
when
wide
wild
winter