The bird tucked its head under its wing.

鸟头缩进下。

A bird's wings enable it to fly.

鸟的使鸟飞。

Spreading her wings, the bird headed for the island.

鸟儿展开向岛上飞去。

The bird fluttered its wings in the cage.

小鸟在笼子里拍动。

The reddish-brown color phase of the jaguarundi.

前半段为红褐色的美洲鹰。

One day a squawky Bird with a broken wing arrives in the yard.

一天，一只断的苍鹭来到院子里。

Bats are the only mammals to have wings and to achieve sustained flight.

蝙蝠是唯一的有且持续飞行的哺乳动物。

There is a bird fluttering about inside the chimney. How can we get it out?

烟囱中有一只鸟在拍打, 我们怎么它弄出来?

The eggshells crackled, and the turkey babies fluttered and cheeped and snuggled against me.

蛋壳裂开，初生的火鸡拍动着，卿卿地叫着，偎依着我。

The butterfly quivers its wings.

蝴蝶抖动。

Pigeons preened their wings and cooed.

鸽子用喙整理, 咕咕地叫。

The bird stretched its wings.

鸟展开。

Their cousins are the manatees, the trunkless elephants of the rivers.

当他们脱下时，千万的双落入地球，雪盖住他们，于是喜马拉雅形成。

Butterflies' wings are very beautiful.

蝴蝶的很漂亮。

The bird quivered its wings.

那只鸟抖动它的。

The bird is beating feebly.

那只鸟的在无力地扑扇着。

He is resisting, fluttering his tiny wings,still making an effort to fly,the dancer is laughing with a satanical air.

它仍在挣扎，鼓动着想飞走，那个滑稽小丑望着它发出邪恶的笑。

He is resisting, fluttering his tiny wings, and still making an effort to fly, but the dancer is laughing with a satanical air.

它仍在挣扎，鼓动着想飞走，但是那个滑稽小丑望着它发出邪恶的笑。

Spedding and his colleagues think that the unique aerodynamic wake signatures of bat wings are caused by different mechanical operations in the upstroke of the wingbeat.

斯佩丁和他的同事们认为，独特的气动签字后，蝙蝠的所造成不同的机械操作，在upstroke的wingbeat 。