我在后院看到一只蜂鸟在花丛中快速扇动翅膀。

I saw a ___hummingbird rapidly flapping its wings among the flowers in the backyard.

她的舞姿轻盈灵动，像蜂鸟一样充满活力。

Her dance was as energetic and light as a ___hummingbird's movement.