英文關鍵字
beings
bumblebees
buzz
earth
facilitating
flower
frequency
generate
helps
muscles
nature
pollen
pollination
process
rapidly
release
role
specific
stamens
vibrating
vibration
wings
英文關鍵字
beings
bumblebees
buzz
earth
facilitating
flower
frequency
generate
helps
muscles
nature
pollen
pollination
process
rapidly
release
role
specific
stamens
vibrating
vibration
wings