Some birds which were once a common sight are now becoming rare.
有些曾经随处可见的鸟类现在日益稀少。
And some birds do not build nests at all.
并且有些鸟根本不筑巢。
However, some birds thrive in noisy environments.
然而，有些鸟会在嘈杂的环境中茁壮成长。
They have led some birds to give up on migration.
它们导致一些鸟类放弃迁徙。
Some birds fly in groups for safety, while others fly alone.
有些鸟类会为了安全而成群地飞行，而其它鸟类则独自飞行。
Some birds will protect their babies when they are in danger.
当处于危险之中时，有些鸟会保护他们的孩子。
Some birds will fly away to the south, other birds will fly north.
一些鸟会往南飞，其他的鸟往北飞。
Some birds build their nests on the ground, while others bury their eggs under the ground.
有些鸟在地上筑巢，有些则把蛋埋在地下。
Some birds migrate by flying to a warmer place for the winter, where they can find more food.
有些鸟会飞到更温暖的地方迁徙过冬，在那里可以找到更多食物。
The birds are hard to observe, as they live in a region of mountainous forest, so the researchers have attached tiny cameras to the tails of some birds, as one method of investigating their behaviour.
这些鸟很难观察，因为它们生活在山区森林里，所以研究人员在一些鸟的尾巴上安装了微型摄像机，以此作为一种研究它们行为的方法。
Now you have some birds that are quiet mature, quite capable, almost as soon as they hatch.
现在你拥有了一些几乎一孵化出来就相当成熟、相当能干的鸟儿。
These are some birds in the air.
空中有几只小鸟。
有些小鸟就是这样不搭理人。
Well, some birds may have the same idea.
呵呵，一些鸟儿可能也会这招。
Some birds said to the bat, "Come with us."
鸟对蝙蝠说：“加入我们吧。”
Ihave to remind myself that some birds don't mean to be caged.
我得经常同自己说，有些鸟儿是关不住的。
Some birds have been incorporated onto national flags or emblems.
有些鸟还被作为国旗或国徽的组成部分。
Some birds of prey are thought to have eye sight as sharp as 20/2.
一些捕猎鸟类被认为有20/2的锐利的视力。
While I was riding some birds flew in front of us and scared my horse.
当我骑得正高兴的时候，只见一群小鸟从面前飘过，我的马便受惊了。
You know some birds are not meant to be caged, their feathers are just too bright.
你知道，有些鸟儿是注定不会被关在牢笼里的，它们的每一片羽毛都闪耀着自由的光辉。
Some birds are very lively in their sports; and the same is true with some insects.
有些鸟类在玩起来的时候是很活跃的，有些昆虫类也是如此。
Some birds aren't meant to be caged, that's all. Their feathers are just too bright!
有的鸟是不会被关住的，因为它们的羽毛太美丽了！
some birds aren't meant to be caged, that's all. Their feathers are just too bright..。
有的鸟是不会被关住的，因为它们的羽毛太美丽了！
He asked some birds if they knew where the penguin came from. But they ignored him.
他去问小鸟们，知不知道小企鹅是从哪里来的啊，可是她们却睬都不睬他。
And just like humans, some birds need to pick out just one voice in the crowd, Theunissen says.
就像人一样，有些鸟需要在鸟群中挑选出一些声音，Theunissen说。
We are going to add some birds to the right of the clouds the same way we made the clouds in Step 16.
我们将运用与步骤16相同的方法，在云彩左方添加一些飞鸟。
Many people pay 10 Yuan and spend a whole day in tea house, enjoying tea, a newspaper, and some birds in cage.
许多人花费10元，在茶馆里呆上一整天，品茶、看报纸、逗逗笼子里的鸟。
Many people pay 10 Yuan and spend a whole day in tea house, enjoying tea, a newspaper, and some birds in cage.
许多人花费10元，在茶馆里呆上一整天，品茶、看报纸、逗逗笼子里的鸟。
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