1.【航】(飞机,导弹等航迹中云状的)凝结尾流[迹],凝迹;逆增[转换]轨迹
1.a line of white steam left in the sky by an airplane flying very high
1.When this hot water vapour mixes with the surrounding air, a cloud in the form of a contrail may appear .
当热的水汽遇上周围的空气便可能形成雾，以尾流形式出现。
2.Every cloud you see is made of tiny droplets or crystals like this, and so is a contrail.
你所看到的每一朵云都是由这样的小水滴或者是冰晶构成的，飞机的轨迹也是如此形成的。
3.Contrail Frequency over the United States from Surface Observations.
地面观测得到的美国飞行云发生的频率。
4.If you see a plane that's leaving no contrail--or a very short one--this means the upper atmosphere is relatively dry.
如果你看见没有轨迹的飞机—或是很短—这就意味着上层大气层相对较干。
5.Update at 8: 05 a. m. ET, Nov. 11: Contrail Science now says the next time the flight's scheduled to fly over the coast is Friday evening.
11月11日美国东部时间早上8点05分更新：ContrailScience发布的最新消息说，按照该航班的航次安排，下次飞越这个海岸上空的时间是星期五晚上。
6.The tip of the contrail is moving far too slowly to be a rocket.
这个凝结尾流向远处流动的速度太缓慢了，因此这不可能是火箭飞行留下的。
7.To make an airplane contrail, you need water and some kind of microscopic particle for the water to condense around.
创造一条飞机的轨迹，你需要一些水和一种能让水在它周围凝聚的各种微小粒子。
8.On a worldwide average, contrail-induced cloudiness traps an extra 31 milliwatts of energy per square meter.
从全球平均来看，飞行云造成的云量所阻隔的能量为每平方米31毫瓦。
9.A contrail occurs when the jet's water vapor condenses around its own exhaust particles.
当喷射的水蒸气与周围的排放粒子冷凝时，轨迹就形成了。
10.A contrail is the visible vapor trail behind airplanes or rockets traveling at high altitudes.
这团痕迹可能是飞机或火箭飞上高空后留下的航迹云。