The north pole is warmer than the south and the circulation of air around it is less well contained.
北极比南极温暖，其周围的空气循环更为畅通。
We are sure that if there are fewer people driving, there will be less air pollution.
我们确信，如果开车的人少一些，空气污染就会少一些。
The zones do deliver some improvements to air quality, and the science tells us that means real health benefits—fewer heart attacks, strokes and premature births, less cancer, dementia and asthma.
这些区域确实改善了空气质量，而且科学表明，这意味着切实的健康收益——心脏病、中风和早产发病率降低，癌症、痴呆和哮喘等疾病的减少。
With fresh air to breathe, less crowded living conditions, and more chances to take part in physical exercise, children in the country are usually healthier than those in the city.
乡下的孩子有新鲜的空气可以呼吸，生活环境不那么拥挤，有更多的机会参加体育锻炼，所以他们通常比城市中的孩子健康。
That means trees produce less energy from the air.
这意味着树木从空气中产生的能量更少。
These new findings should help airplane passengers to feel less vulnerable to catching respiratory infections while traveling by air.
这些新发现应该有助于乘客在乘坐飞机旅行时不那么容易感染上呼吸道病毒。
To grow and eat a pound of potatoes sends less than one-quarter pound of carbon dioxide into the air.
种植和吃掉一磅土豆，向空气中排放的二氧化碳不超过四分之一磅。
Using air conditioners less is also a good way.
少用空调也是一个好办法。
If everyone drives such a car in the future, there will be less pollution in the air.
如果将来每个人都开这样的车，空气中的污染会更少。
La ninas change global weather patterns; they are associated with less moisture in the air, resulting in less rain along the coasts of North and South America.
拉尼娜改变了全球的气象格局：由于它的出现，大气中水汽的减少，从而导致南北美洲海岸的少雨。
The air wands can apply cool air directly to the “hot spots” inside a server tray, meaning less air is wasted or misdirected in the server room or container.
这个空气杆能够为在服务器托盘中位那些热的部件提供冷空气，这意味着减少了冷空气的浪费以及在机房的非直接性质的冷空气。
If the surface is cooled and the air above it warmed, there is less tendency for air from near the surface to rise; reduced convection will tend to lead to fewer clouds and reduced rainfall.
假设地表降温而其上的空气升温，那么地表的空气要向上升腾就变得不那么容易；而对流减少导致的将会是趋向于减少的云层生成和降雨。
Mountain air contains less oxygen than air at lower altitudes, so breathing it causes the heart to beat faster and the body to burn more energy.
高山上的空气含氧量小于比低海拔地区，所以呼吸时心脏会跳动地更快，身体也会消耗更多能量。
However, those households that reported using both fans and air conditioners spent less on electricity than those households that used either fans or air conditioners alone.
然而，那些报告说同时使用风扇和空调的家庭电费花费比单独使用风扇或空调的家庭少。
And cutting back on black carbon will also pay immediate health dividends, with less air pollution and fewer deaths from respiratory diseases.
减少炭黑排放还能带来健康的额外好处，因为空气污染少了，死于呼吸道疾病的人也少了。
The coming cold is connected to the lower flow speed of the Gulf Stream, which causes it to send less warm air to Europe.
这种极端天气的形成是由墨西哥湾暖流活动速度减缓，从而输往欧洲的暖空气减少所致。
If less hot air seeps in, and less cooled air seeps out- the less work your unit has to do to keep the temperature regulated!
如果漏进来的热风越少，漏出去的冷风也越少，那你的空调就不需要那么“努力工作”来让房间的温度保持在某个水平上了。
EMALS recovers faster than steam catapults, meaning future carriers should be able to get more aircraft in the air in less time, and the electromagnetic launcher also wastes less energy.
电磁飞机弹射系统能够更快地重新充满能量，这意味着未来航母能够以更少的时间把更多的飞机弹射入空，而且电磁弹射器消耗的能量也更少。
If one had habitually breathed the New York air there were times when anything less crystalline seemed stifling.
假如一个人一直习惯于呼吸纽约的空气，那么，有时候，不够清澈的东西似乎就会让他窒息。
In contrast, a single monitor operated by the United States Embassy in downtown Beijing, where traffic is heavy, consistently reports less healthy air conditions than the official index.
与此相反，位于北京高郊的美国驻华大使馆依其自已的一套监测设备则持续显示，有利有身体健康的空气质量状况统计数据要差于官方数据。
Air slipping along the fuselage moves slower, so the engines ingest less oxygen and burn less fuel.
机身上流动的空气速度减慢，所以引擎的吸氧量减少从而节省了燃料。
Rich countries account for most of the past emissions that now fill the air, but less than half the world's current emissions.
大气中累积的绝大部分温室气体由发达国家排放，但发达国家目前的排放量还不到世界总量的一半。
On Sydney harbour, the thick red air cut visibility to less than 100 metres and shrouded the city's iconic bridge in a ghostly hue.
在悉尼港，厚重的红色空气使能见度降低到不到100米，掩盖城市标志桥梁于幽影之中。
When emperor penguins glide through the water, tiny air bubbles trail behind. On land, they are much less graceful.
这是企鹅们滑入水中的一刻，身后带着一串长长的气泡。在陆地上，他们可远没有这么优雅。
That engine would carry the hypersonic craft to an altitude where air density and resistance are less.
引擎将高超音速飞机带向空气密度、阻力比较稀少的高度。
Global cooling meant that the air had less capacity to hold moisture from the oceans, leading to fewer rains and more arid climes.
全球变冷将使空气更难保持海洋蒸发的水分，从而减少降雨量，使更多的地方面临干旱。
Global cooling meant that the air had less capacity to hold moisture from the oceans, leading to fewer rains and more arid climes.
全球变冷将使空气更难保持海洋蒸发的水分，从而减少降雨量，使更多的地方面临干旱。
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