But birds are not the only ones at risk.
但不仅仅是鸟类有这种危险。
But birds, butterflies, and insects frolicked there, and it was the paradise of my childhood.
但是，那儿是鸟儿、蝴蝶和各种各样的昆虫嬉戏的地方，也是我童年时代的乐园。
But sometimes certain species of birds do the exact opposite.
但有时，某些种类的鸟类却会做出相反的举动。
But just some 22,000 birds remain today, occupying about 16% of the species' historic range.
但如今仅存的鸟类只有约22000只，约占该物种有史以来数量的16%。
But city birds are not like other birds.
但是城里的小鸟跟其他地方的小鸟不一样。
But I would never really kill any birds. I love all kinds of animals.
（其实中国的成语叫做一箭双雕）但其实我从来不杀鸟，我爱所有的动物。
But do city birds really need more gray matter to make it?
但是就因为这样，城里小鸟就需要变得更聪明吗？
But not even Franzen can watch birds all the time.
但即使是弗兰岑也不能一直赏鸟。
But for birds and pigs, it's flu season year round.
不过对于禽类和猪来说，它们的流感季节是一年四季的。
但是鸟儿回来了。
But, oddly enough, people who study birds think they may have some clues.
但很奇怪的是，人类希望能通过研究鸣禽类得到一些线索。
They are birds, but they cannot fly.
它们是鸟，但是它们不会飞。
但是城市里的鸟类怎么办呢？
But others believe the birds are navigated by the earth's magnetic field.
但也有人认为，鸟类是靠地球磁场导航的。
But for the birds, a butt a day might just keep mites away.
但是对于鸟儿们来说，一天一个烟蒂，螨虫就会远离我。
Five who loves birds... but not all in the same way.
五个喜欢鸟…但不是以同一种方式。
The sky did not leave traces of the birds, but i have been over.
天空没有留下鸟的痕迹，但我已飞过。
Birds of a feather flock together... but what do you call the family?
鸟类的羽毛羊群一起……但是，你有什么要求的家庭呢？
She is old, but her hands are still quick as birds.
她老了，可是她的一双手却依然像鸟儿一样灵巧。
We like birds but we don't like flies.
我们喜欢鸟但不喜欢苍蝇。
I like birds fly! Though, but I can't fly high!
我像的候鸟！虽然会飞，但我永远飞不高！
Birds fly above the surface of the ocean, but fish swim below the surface.
鸟儿在海洋上之上飞翔，但鱼却在水面下游泳。
Birds can fly easily because they are light, but men's bodies are heavier.
鸟儿能够轻易地飞行，因为它们很轻，但男性的身体很重。
But scientists still don't fully understand how birds breathe.
但是科学家们现在也不完全明白鸟类是如何呼吸的。
But why are the birds doing the wave as they huddle?
但是这些企鹅挤成一堆的同时为什么还要摇摆呢？
Pigs may fly, but they are very unlikely birds.
猪儿纵会飞，终究不是鸟。
But my father gave me special present. It was a book named Stray Birds.
不过我爸爸却给了我一份特别的礼物。一本名叫飞鸟集的书。
Everybody knows that birds sing. But it appears that some can dance, too.
我们都知道鸟儿会唱歌，可有些鸟儿好像还会跳舞呢。
Everybody knows that birds sing. But it appears that some can dance, too.
我们都知道鸟儿会唱歌，可有些鸟儿好像还会跳舞呢。
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