英文關鍵字
1080
1920
action
africa
amphibius
animal
baby
canon
color
day
down
film
format
frames
full
group
herbivore
hippopotamidae
hippopotamus
image
kenya
laying
length
locomotion
mammal
mara
masai
motion
movement
nature
outdoor
outdoors
park
people
per
playing
real
second
standing
time
ungulate
video
walking
wildlife
young
youngs