Hold the windsock up in the air by its string and run around.
用绳子把风向标举起来，然后跑一圈。
Since a plant uses it up in the air around, the plant needs moving air to bring more CO2 close to its surface!
由于植物会将周围空气中的二氧化碳耗尽，因此需要空气流动将更多的二氧化碳带到其表面！
The oil refinery in the borough of Azcapotzalco, which was said to belch out up to 7% of Mexico City’s air pollution, was shut in 1991. Some of its land was converted into a park.
阿斯卡波察尔科行政区的石油精炼厂在1991年被关闭了，该炼油厂曾被估测出排除的污染物占墨西哥空气总污染物的7%，关闭之后，它的大部分场地被开垦重建成公园。
One way to get round this limitation is to set up a laser in mid-air, its beam sampling the molecules along its path as it returns to the source.
避免这个局限的一种方法是在两者之间放置一个激光器，它的光束在返回光源时对途径的分子进行取样。
But even more impressive is to see the Raptor at low speed, hovering almost stationary in the air, its nose pointing upwards, like a child’s toy strung up to the sky.
但是，“猛禽”战斗机还可以保持低速飞行状态，悬停半空几乎静止，机头上挑，就像挂在天上的儿童玩具那样；一个人若能见到这般景象，则更会心服口服。
They may not be the stars of Up in the Air, but they are what gives the movie its soul.
他们也许不是《在云中》里的明星，但他们才是这部电影的灵魂。
The two companies also plan to bid the UH-60M in the air service's planned competition to replace its 62 Vietnam War-vintage UH-1N Hueys with up to 90 new utility helos.
两家公司还在计划，对飞行服务竞争中的UH-60M直升机进行投标，以取代其62架越南战争中使用过的老式UH-1N Huey直升机和90架新多用途直升机。
In 1887, Guy de Maupassant sent up a hot-air balloon over the Seine with the name of his latest short story, “Le Horla,” painted on its side.
1877年，莫泊桑在塞纳河上放了一个热气球，气球一侧印有其最新短篇小说的名子《奥尔拉》。
If the regenerative air dryer will be oil steam can be in its pollution, upstream oil filters to set up steam extend the service life of desiccant.
如果再生式空气干燥器会被油蒸气污染，则可在其上游设置油蒸气过滤器，以延长干燥剂的使用寿命。
One balloon was not yet up in the air. Its owner was hurrying to fill it as a newspaper reporter took pictures.
还有一个气球还没起飞。当报纸记者拍照的时候，气球主人正赶紧要往里坐。
One elderly couple's car somehow ended up on its side in Bel Air, and they made the best of the situation by snapping photos.
一对老夫妇的汽车在了贝莱尔的路边抛锚，他们充分利用这一情况抓拍了照片。
The flax fabric can refresh the air condition inside garment in time and keep up its comfort and cleanness.
麻织物的透气性能远远优于棉织物，可以使服装内的空气及时更换，保持舒适和清洁。
The air jet weaving machine employs the air picking-up, its weaving technology consisting in small shedding and large tension.
喷气织机采用气流引纬，其织造工艺为小开口大张力。
The fact that an aeroplane is up in the air and cannot stop if anything goes wrong, makes it perhaps a matter of life or death that its performance is absolutely dependable.
事实上，飞机是在空中，不能停止，如果任何事情都会发生错误，这使得或许是生死存亡，其性能绝对可靠。
In fact, the reason the U. S. air Force chose the air-launched anti-satellite system is that it does not have to have its target line up with a ground-based missile pad.
事实上这也是美国选择空基反卫星武器的原因：目标卫星轨道不需要被改变。
At the University of Sydney, in Australia, Steve Manos used an evolutionary algorithm to come up with novel patterns in a type of optical fibre that has air holes shot through its length.
在澳大利亚的悉尼大学，史蒂夫·马诺斯使用了“进化式运算法则”设计出了一种光学纤维的新颖的样式（这种纤维的整个长度面都布满了气孔）。
At this point, Selenium throws its hands up in the air, there is very little it can do.
在这一点上，硒把双手在空中，很少有能做的。
These points add up to free air miles or cash discounts, so it really pays to stay loyal to the brand in all its diversified forms, 'says Austin.
这些积分一直累加到免费空中飞行里程数或现金折扣，因此超市确实以各种形式对忠诚于某品牌的行为进行了回报，”奥斯汀说。
The active mouth boils, sending red lava over its sides, and once in a while shoots hot streams up to 100 metres into the air.
积极口，说到底，发送红色的熔岩在其两岸，一旦在一个芽，而热起来的溪流米至100米到空气中。
As the hot beach air rises up, the relatively cooler air over the water moves in to take its place.
随着海滩上空热空气的上升，水面上相对寒冷的空气就会流动过来代替热空气的位置。
The party breaks up at dawn and we get into the boat again and move it into the miles of lotus-covered surface where we catch a nap in an air filled with its fragrance. We have a perfect sleep.
我们这些人任船在湖面飘流，在十里的荷花丛里酣睡，花的香气扑人，连做梦都感到清香，真是畅快舒服极了。
Finally the parent bird gives up its pretence and leaps into the air just in time to escape the fox's jaws.
在狐狸的爪子就要抓到母鸟时，它终于放弃伪装，腾空而起。
Finally the parent bird gives up its pretence and leaps into the air just in time to escape the fox's jaws.
在狐狸的爪子就要抓到母鸟时，它终于放弃伪装，腾空而起。
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