英文關鍵字
adaptation
air
animal
aspiration
background
beautiful
beauty
bird
cliff
cloud
color
dream
ecology
ecosystem
environment
flight
fly
flying
free
freedom
ground
group
gull
heaven
high
instinct
island
lifespan
migration
motion
nature
ornithology
outdoor
peace
population
priceless
research
science
seagull
sky
slow
slowmo
species
study
survival
travel
wild
wildlife
wing
world