cloudiern.人造云cloudn.云；阴影Clouds scudded across the sky.云朵飞快地掠过天空。cloud meteorological observation气象测云Clouds drifted across the sky.朵朵浮云在空中飘过。Cloud seeding temperature window播云温度窗Clouds wreathed the mountains.浮云萦绕群山。clouds with vertical development直展云Clouds building on the horizon.地平线上逐渐增多的云Clouds involve the mountaintop.云雾笼罩山头。cloud density measuring apparatus云密度测量仪cloud top height estimation system云顶高度估算系统