Birds are widely believed to have evolved from dinosaurs.
鸟类普遍被认为是从恐龙进化而来的。
The bright plumage of many male birds was thought to have evolved to attract females.
许多雄鸟的鲜艳羽毛被认为是为吸引雌鸟而进化来的。
That may be a hint that yawn evolved as a social cue—"time for us all to go to bed".
也许这是打哈欠进化为社交线索的一种暗示——“到我们大家睡觉的时间了”。
Primates and birds' brains have evolved along different tracks, but ended up with similar abilities.
灵长类动物和鸟类的大脑沿着不同的轨迹进化，但最终拥有相似的能力。
As feathers became larger over time, flapping flight evolved and birds finally became fully air-borne.
随着时间的推移，羽毛变得越来越大，扑翼飞行逐渐发展，鸟类最终完全可以在空中飞行。
If the toco toucan had evolved in chilly Ireland, its impressive bill would have been much more modest.
如果托哥巨嘴鸟是在寒冷的爱尔兰进化而来的，它那令人印象深刻的喙部就会比现在小得多了。
Traditional marriage has evolved from a near-universal ritual to a luxury for the educated and affluent.
传统婚姻已经从一种近乎普遍的仪式演变为受过良好教育和富裕阶层的奢侈品。
Although many lines of evidence indicate that birds evolved from ground-dwelling theropod dinosaurs, some scientists remain unconvinced.
尽管有许多证据表明鸟类是从陆生兽脚亚目恐龙进化而来的，但一些科学家仍然表示怀疑。
In short, our brain evolved circuits to allow us to experience sympathy, which in turn made civilization, and ethics based on sympathy, possible.
简而言之，我们的大脑进化出了让我们体验同情的回路，这反过来又使文明和基于同情的伦理成为可能。
They have evolved special "heaters" of modified muscle tissue that warm the eyes and brain, maintaining peak performance of these critical organs.
它们进化出了一种特殊的“加热器”，由经过改造的肌肉组织构成，可以温暖眼睛和大脑，使这些关键器官保持最佳状态。
"Flamingos have evolved very leathery skin on their legs so they can tolerate the salt water," says David Harper, a professor at the University of Leicester.
莱斯特大学教授戴维·哈珀表示：“火烈鸟的腿上已经进化出了非常坚韧的皮肤，这样它们就可以忍受盐水。”
Salsa is a kind of dancing that evolved in the mid-1970s in New York.
萨尔萨舞是20世纪70年代中期在纽约发展起来的一种舞蹈。
The idea evolved from a drawing I discovered in the attic.
这种想法是从我在阁楼里发现的一幅画得到启发的。
Modern dance evolved in the late nineteenth, early twentieth century, and in most cases, audiences were very receptive to this radical new type of performing art.
现代舞是在19世纪末20世纪初发展起来的，在大多数情况下，观众对这种全新的表演艺术接受度很高。
As socialism with Chinese characteristics has entered a new era, the main contradiction facing Chinese society has evolved.
随着中国特色社会主义进入新时代，中国社会面临的主要矛盾发生进一步的变化。
GUI interfaces have evolved to resemble everyday objects.
图形化用户界面已经进化到和日常用品一样了。
Over millions of years your body has evolved for survival.
上百万年来，你的身体为了生存一直在进化着。
Later, some of those flightless insects evolved wings again.
可是再后来，其中一些失去飞行能力的竹节虫又重新长出了翅膀。
We've evolved over millions of years to sense the world around us.
在上百万年的进化中，我们一直在感知周围的世界。
But then I appreciate who I evolved as a person — the man the father.
但接下来，我又欣赏自己成为这样一个人——一个男子汉，一个父亲。
But then I appreciate who I evolved as a person — the man, the father.
但接下来，我又欣赏自己成为这样一个人——一个男子汉，一个父亲。
Our sensitivity to bitterness may have evolved to protect us from poisons.
对苦味如此敏感的好处是避免我们中毒。
Our sensitivity to bitterness may have evolved to protect us from poisons.
对苦味如此敏感的好处是避免我们中毒。
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