最开始的云石薄而缥缈的卷云，紧接着是成片的卷层云和高层云。
The first clouds are thin, wispy cirrus, followed by sheets of cirrus and cirrostratus and altostratus.
片状、高质感的积云出现在低海拔的位置，而在高海拔，灰色的高层云被盛行的风所吹散。
Patchy, highly textured cumulus clouds are present at lower altitudes, while grey altostratus clouds are stretched out by prevailing winds at higher altitudes.
它们被称作“阿尔图”(中音部——译注)云，包括平坦的高层云和肥胖的高积云(上图)。
They are referred to as "alto" clouds and bear such names as altostratus, which are flat, or altocumulus (pictured), which are puffy.
图中可见凝结尾迹浅蓝色，厚云白色，高层云浅蓝色及雾低层云红色，质感较柔和。
Major features appearing on the image include contrails light blue, deep clouds white, high clouds light blue and fog mist low clouds red - smooth in texture.
当气温开始降低，冰从高层云中落下来的时候，它们会开始形成平整的六边形的晶体。
When the atmosphere is cold, ice sometimes forms flat six-sided crystals as it falls from high-level clouds.
当气温开始降低，冰从高层云中落下来的时候，它们会开始形成平整的六边形的晶体。
When the atmosphere is cold, ice sometimes forms flat six-sided crystals as it falls from high-level clouds.
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