英文關鍵字
adult
ballons
black
bright
clouds
contrast
crowd
crowded
day
daylight
downstair
downstairs
evening
family
figure
freedom
hike
holiday
individual
leisure
mass
men
park
pedestrian
people
person
plane
public
recreation
recreational
shadow
shape
silhouette
sky
stair
staircase
stroll
summer
sunlight
unrecognizable
upstair
upstairs
visitors
walk
women