Alula
01
(ornithology) a tuft of small, stiff feathers attached to the first digit of a bird's wing that helps control flight at low speeds
专业
语法信息
例子
The alula helps stabilize the bird during flight.
02
(entomology) a scalelike membranous structure between the base of a fly's wing and its halter
专业
例子
The alula helps stabilize the fly during flight.
