英文關鍵字
animal
animals
antarctic
antarctica
cold
global
hydrurga
ice
iceberg
leopard
leptonyx
mammals
marine
melting
mouth
nature
peninsula
pole
predator
sea
seal
seals
snow
south
teeth
warming
white
wildlife
yawning
英文關鍵字
animal
animals
antarctic
antarctica
cold
global
hydrurga
ice
iceberg
leopard
leptonyx
mammals
marine
melting
mouth
nature
peninsula
pole
predator
sea
seal
seals
snow
south
teeth
warming
white
wildlife
yawning