英文關鍵字
06467
common
swift
schwalbe
swallow
hirundÃnidos
apus
hirundinidae
mauersegler
avión
zapador
martins
saw-wings
bird
songbird
nesting
swifts
building
roof
half-timbered
old
town
house
bring
mus
shore
create
nest
base
swallows
picking
mud
river
build
nests