Whereas in mammals the tiny tubes that convey nutrients to bone cells are arrayed in parallel lines, in birds the tubes form a random pattern.
哺乳动物将营养物质输送到骨细胞的微小管道是平行排列的，而鸟类的管道则是随机排列的。
In birds the second finger is the principal strut of the wing, which consists primarily of feathers.
鸟类的第二根手指是翅膀的主要支柱，翅膀主要由羽毛组成。
It is not yet known what the plot will be or who will star in Angry Birds the movie but they are hoping to have it ready for release in 2015.
目前还不清楚这部根据游侠改编的电影具体有怎样的情节、将由谁配音，但公司希望能在2015年发行。
The door enables us to shut the birds in the shelter in bad weather.
这扇门能让我们在天气不好时把这些鸟关在庇护处。
Migrating birds filled the pale sky.
迁徙的鸟布满了灰白的天空。
The birds smashed into the top of their cages in fright.
鸟儿们吓得猛撞笼顶。
The birds circled in a slow spiral above the house.
鸟儿在房子上空缓缓盘旋。
鸟使牛奶受污染。
The birds sang, the bees hummed.
鸟儿唱歌，蜜蜂蜂鸣。
The birds nibble at the brickwork.
鸟儿们啄着砖墙。
The birds build their nests in the rock face.
这些鸟在岩壁上筑巢。
The male birds are more colourful than the females.
这种鸟雄性比雌性更加色彩艳丽。
The birds flew around and then resettled on the pond.
鸟儿飞来飞去，然后落在池塘边上。
The researchers set the birds free.
研究人员把鸟放了。
Migrant birds shelter in the reeds.
候鸟隐蔽在芦苇丛中。
Two birds settled on the fence.
两只鸟落在篱笆上。
We watched the birds skimming over the lake.
我们看着鸟儿贴着湖面飞过。
The birds, the people, the blueness of the sky, the clouds floating along, the smell of the fresh air, and the warmth of the sun on your cheeks.
鸟儿、人们、蓝蓝的天空、漂浮的云彩、新鲜空气的气息，还有映照在你脸上的暖阳。
Now, for animals other than birds, the care of young by both parents is pretty unusual in the animal kingdom.
现在，对于鸟类以外的动物来说，父母双方都照顾孩子在动物界是很罕见的。
Like birds?”The students could not believe their ears.
就像鸟一样?”同学们都不相信自己的耳朵。
I heard birds, the wind the trees, and the occasional murmur of a stream.
我听到树林里的鸟鸣，风的低吟，偶尔还听到潺潺的溪水声。
They send each other the song of the birds, the perfume of the flowers, the smiles of children, the light of the sun, the sighings of the breeze, the rays of stars, all creation.
他们互送飞鸟的啼唱、花朵的香味、孩子们的笑声、太阳的光辉、风的叹息、星的闪光、整个宇宙。
The more closely you begin to examine different birds, the more familiar you will become with the wide range of bills.
对不同鸟类的观察越仔细，你对多种多样的鸟喙的了解就会更深入。
Is it not so that birds, the wind, the sea and all nature speaks with the music of praise for their creator?
飞鸟，清风，自然界的万物不都在用美妙动听的歌声赞美造物主吗？
Though Dr Spottiswoode's research focused on birds, the principle is likely to apply to other social species, people included.
尽管Spottiswoode博士的研究仅仅限于鸟类，但这样的规律似乎也适用于包括人类在内的其他物种。
Therefore by comparing the genomes of the two birds, the scientists could identify the genes that are most likely to be important in singing and learning to sing.
因此，通过比较这两种鸟类的基因，科学家们可以确认，这部分基因对于一个鸟类是否会唱歌而且会学习唱歌非常重要。
模仿鸟儿，那人说。
Led by the Royal Society for the Protection of Birds, the census Numbers continue to climb.
由英国皇家鸟类保护学会主导的普查数据显示，这个数字还在继续攀升。
Led by the Royal Society for the Protection of Birds, the census Numbers continue to climb.
由英国皇家鸟类保护学会主导的普查数据显示，这个数字还在继续攀升。
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