英文關鍵字
animal
anthem
bird
blue
breeding
bright
bush
cane
canto
chatter
chipper
chirp
chirrup
colorful
day
dense
field
fluffy
generation
growth
increase
lake
leaf
lighting
marsh
natural
nature
nightingale
philomela
plants
pond
reed
river
rush
sedge
seeds
shore
silhouette
sing
song
sparrow
spring
stem
straw
summer
sun
sunny
swamp
tweet
warm