臭氧是地球防止紫外线辐射的屏障。
Ozone is the earth's barrier against ultra-violet radiation.
长江是东北方向的一道天然屏障。
这些人造屏障将会确保几百年的高度保护。
These man-made barriers will ensure a very high degree of protection for several hundred years.
一场猛烈的暴风雨摧毁了房屋和湖泊之间的天然屏障。
A severe storm destroyed a natural barrier between the house and the lake.
这个细胞只有在无法通过时才能成为有效的屏障。
This cell can only be an effective barrier if there's no way to get past it.
一旦保护层丧失，皮肤的整体屏障就受到破坏，皮肤变干。
Once that protection is lost, and the integrity of the skin barrier disrupted, skin becomes dry.
因为早期的地球大气中缺乏氧气，所以也缺乏起保护作用的臭氧层屏障。
Because early Earth lacked oxygen in its atmosphere, it also lacked a protective ozone barrier.
高速公路隔声屏障作为一种经济有效的方法，是降低交通噪声的主要措施。
As an economical and effective method, the expressway noise barrier is a primary measure to reduce traffic noise.
二氧化碳在我们和太阳之间形成了一道屏障，阻止热量从大气中散发出来。
Carbon dioxide, which makes a barrier between us and the sun, prevents heat from getting out of the atmosphere.
如果没有物理屏障将继续在同一栖息地生活和繁殖的个体隔离开来，分化是否会出现？
Can divergence occur if no physical barriers are in place to separate individuals who continue to live and reproduce in the same habitat?
当天气炎热时，鸵鸟会把它们背在背上，这样就增加了太阳辐射与皮肤之间的屏障厚度。
When conditions are hot, the ostrich erects them on its back, thus increasing the thickness of the barrier between solar radiation and the skin.
他试图教一只叫巴斯的雄性海豚和一只叫桃瑞丝的雌性海豚隔着一道坚固的屏障互相交流。
What he tried to do was to teach a male dolphin called Bass and a female called Doris to communicate with each other across a solid barrier.
他们封锁道路，负责架设长达25英里的人体屏障，并在一个广阔的区域内实施停车管制令。
They blocked roads, set up 25-mile human barriers, and enforced parking control orders over a wide area.
二氧化碳在我们和太阳之间形成了一道屏障，阻止热量从大气中散出，因此地球变得越来越热。
Carbon dioxide, which makes a barrier between us and the sun, prevents heat from getting out of the atmosphere, so the earth is becoming warmer.
以前，大陆之间的鸿沟允许水自由流动；而现在地峡形成了一道屏障，把大西洋和太平洋分隔开来。
While previously the gap between the continents had allowed a free flow of water, now the isthmus presented a barrier that divided the Atlantic Ocean from the Pacific Ocean.
它是在密西西比和佛罗里达的一些大陆地区沿岸，组成海湾群岛国家海滨的七座屏障岛屿中的一座。
It is one of seven barrier islands that, along with some mainland areas of Mississippi and Florida, make up the Gulf Islands National Seashore.
因为东面有冰的屏障，西面是太平洋，而且北面是人口稠密的地区，所以促使人们向南迁移的动力会更大。
Because of the barrier of ice to the east, the Pacific Ocean to the west, and populated areas to the north, there may have been a greater impetus for people to move in a southerly direction.
我们种下一排大树作为屏障。
该进攻令联盟得以展示其反导弹屏障。
The attacks allowed the coalition to display its shield of antimissiles.
自1978年以来，已经种植了660多亿棵树，作为防风屏障。
Since 1978, over 66 billion trees have been planted to act as windbreaks.
对于那些必须长时间与电脑打交道的人来说，喝茶可以帮助他们建立一道抵御电脑辐射的屏障。
To those who have to work with computers for a long time, drinking tea can help them to build up a wall against the computer radiation.
法律是我们对抗“偏爱和欲望的支配”的最好的屏障。
Law is the best hedge we have against "the domination of partiality and desire".
第三，巨大的外行星的引力屏障虽然非常有效，但偶尔也会无法保护地球。
Third, the gravitational shield of the giant outer planets, while highly efficient, must occasionally fail to protect Earth.
横在你们之间的车道或栅栏并不真的就是一道冷漠的屏障；它们只不过是一条清晰的分界线。
The driveway or the fence between you is not really a cold shoulder but a clear boundary.
该科学院表示，在父母陪孩子一块玩耍的时候，会建立起一道屏障，抵御包括贫穷在内的各种压力所带来的有害影响。
When parents engage in playing with their children, it builds a wall against the harmful effects of all kinds of stress, including poverty, the academy says.
菲吉特省的农民等人为维护沙袋屏障和闸门进行了斗争。
Farmers in Phichit Province, among others, fought over the maintenance of sandbag barriers and sluice gates.
燕山是北京的天然屏障。
目的是在他们和英国人之间建立一道屏障。
The purpose is to create a fence between themselves and Englishers.
纤维形成一种保护屏障，应对枪击。
为我的祖国筑起一道绿色的屏障。
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