鸟类

The structure of hindlimbs of birds in different ecotype takes on obvious characteristics, from which birds can be distinguished from each other.

不同生态类型的鸟类在后肢骨骼的组成上存在明显的特征，并以此相区别。

Over millenniums, eagles, hawks and other birds have perfected their ability to sense thermals-pockets of warm air eddying up from the earth's surface that allow them to coast with very little effort.

上千年来，鹰、鹫和其他的一些鸟类都拥有完美的感受气流的能力，尤其那些来自地面蜗旋而上的暖气流，这让它们能用极小的努力而滑翔很远的距离。

In the electroencephalographic sense we share it with all the primates and almost all the other mammals and birds: it may

从脑电图上看，我们人类和所有灵长目动物以及几乎所有的哺乳动物和鸟类都一样需要睡眠；甚至爬行类动物也有睡眠。

In the electroencephalographic sense we share it with all the primates and almost all theother mammals and birds: it may extend back as far as the reptiles.

从脑电图上看，我们人类和所有灵长目动物以及几乎所有的哺乳动物和鸟类都一样需要睡眠；甚至爬行类动物也有睡眠。

In the electroencephalographic sense we share it with all the primates and almost all the other ma MM als and birds: it may extend back as far as the reptiles.

从脑电图上看，我们人类和所有灵长目动物以及几乎所有的哺乳动物和鸟类都一样需要睡眠；甚至爬行类动物也有睡眠。

In the electroencephalographic sense we share itwith all the primates and almost all the other mammals and birds: itmay extend back as far as the reptiles.

从脑电图上看，我们人类和所有灵长目动物以及几乎所有的哺乳动物和鸟类都一样需要睡眠；甚至爬行类动物也有睡眠。

Similar findings are seen in birds during migrations,"where birds can fly for days on end without stopping," he explained.

在鸟的迁徙中也有类似的发现。鸟类可以连续飞行很多天不用停止。他解释说。

Endothermy must have evolved sometime between the early Late Triassic, when dinosaurs first appeared in the fossil record and the evolution of modern birds whose ancestors first appeared in the early Late Jurassic.

endothermy必须有一段时间演变之间的晚三叠世早期，当恐龙首次出现在化石记录和演化的现代鸟类的祖先最早出现在早期晚侏罗世。

The Assimilation Capacity Model suggests that the endothermy evolution in birds and mammals is driven by two factors:①a selection for intense post-hatching parent behavior, particularly feeding offspring, and ②the high cost of maintaining the increased capacity of the visceral organs necessary to support high rates of total daily energy expenditures.

同化能力模型认为，在鸟类和兽类中内温性进化由以下两个因素所推动：①子代出生后双亲行为加强；②为支持每日总体能量高速消耗所需，动物内脏器官能力增强而导致的较高维持消耗。

Yes, swans, you are the founder of the great civilization in the kingdom of birds, you epitomize the beauty of thousands of birds, you are the holy and pure Prince Charming in my heart.

是啊，天鹅，你是千百羽族世界伟大文明的缔造者，你是集水上万千鸟类之美的大成者，你是我心中最圣洁的白马王子。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。