Most birds have to fly long distances to migrate.
大多数的鸟类不得不飞行很长的距离进行迁徙。
Birds prefer not to take any chances—and to steer clear of all insects that look, sound, or fly like a bumblebee to avoid being stung.
鸟类宁愿不去尝试更多的机会——它们要避开所有如大黄蜂的长相、声音和飞行模式的昆虫，以避免被蛰。
鸟儿怎么飞翔？
翅膀帮助鸟飞翔。
这些鸟成双成对地飞。
眼瞎的鸟儿转圈飞。
只有鸟会飞。
不是所有的鸟都会飞。
Of course, birds can fly except Kiwis.
当然，除了几维鸟外，其他鸟都会飞。
Birds like this Harris Hawk can fly where they want to, but have been trained to come back for food.
像这种哈里斯鹰可以飞到任何它们想去的地方，但是经过训练它们会回来觅食。
To avoid hurting the thousands of crested ibises that fly near one part of the railway, protective nets have been set up along the tracks to make sure the birds will not fly into a train.
为了避免伤害在铁路附近飞行的数千只朱鹮，铁路沿线已经设置了防护网，以确保这些鸟儿不会飞进火车。
Canada geese flying in a V shape can fly seventy percent farther without having a rest than the birds flying alone.
与单独飞行的鸟类相比，以V形飞行的加拿大鹅在没有休息的情况下可以多飞行百分之七十的距离。
鸟飞向哪里？
Canada geese flying in a V shape can fly seventeen percent farther without having a rest than the birds flying alone.
与单独飞行的鸟类相比，以V形飞行的加拿大鹅在没有休息的情况下可以多飞17％。
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 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。
To South Americans, robins are birds that fly north every spring.
对南美人来说，知更鸟是每年春天都会飞到北方的一种鸟。
He saw birds come and dip their heads to drink in it and then flick their wings and fly away.
他看见鸟儿飞来，低下头来喝水，然后扇动翅膀飞走了。
We all know that millions of birds fly to Dongting Lake in winter.
我们都知道冬天时会有数百万只鸟飞到洞庭湖。
Birds fly in the sky; Tigers live in the forest; Fish swim in the water; Flowers bloom and flowers fall.
鸟儿在天空中飞翔；老虎在森林里生活；鱼在水里游；花开花落。
After eating, the birds fly wire to "close their eyes meditatively."
吃饱后，小鸟们就飞到电线上“闭目养神”。
鸟类是如何学会飞翔的呢？
Hundreds of birds fly in a sunny blue sky. The only sounds are bird calls and the soft noise made by tall grasses as the water slowly moves them.
无数的鸟在阳光明媚的蓝天中飞翔，这里你只能听到鸟的叫声以及当水流缓慢流经草的时候，这些草所发出的柔和的声音。
And while Arthur didn't build his forest of pipes and pulleys to explain why birds fly south in the fall, he's given new meaning to the term "hard - wired".
虽然亚瑟没有建造出一套管道和滑轮的机械森林，解释为什么鸟类要在秋天南飞，但是，他对于什么是“硬线连接”，赋予了新的涵义。
Typically only birds who rely on insects as their primary source of food fly south for the winter, and some birds are drawn to water and wet environments.
基本上只有以昆虫为直接食物来源的鸟类才会在冬季南迁，还有一些鸟儿只能栖息在水源和潮湿环境附近。
Once Lion even saw several birds fly in line when he was in an airplane.
狮子还曾经在飞机上看见有几只鸟儿成一直线地飞翔。
But it's these ample fat reserves that allow the birds to fly such long distances without stopping, said study leader Raymond Klaassen, a biologist at Sweden's Lund University.
可雷蒙德·克拉森，瑞典伦德大学的生物学家，这项研究的带头人却说，正是这些充足的脂肪储存，使沙锥鸟能够一口气完成如此长距离的飞行。
Human one wondered why birds can fly, and why man can not.
人类曾好奇为什么鸟儿会飞，而人不会。
As with other migratory birds that fly long distances, it's unclear how great snipes can apparently fly for such long periods with little or no sleep.
和其它迁徙鸟类一样，沙锥鸟需要飞行很长的距离，但是它们如何在如此长距离的飞行中不睡觉或者只睡很少的觉，原因尚不明确。
As with other migratory birds that fly long distances, it's unclear how great snipes can apparently fly for such long periods with little or no sleep.
和其它迁徙鸟类一样，沙锥鸟需要飞行很长的距离，但是它们如何在如此长距离的飞行中不睡觉或者只睡很少的觉，原因尚不明确。
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