高层云

例句：

1. 1. The weather forecast indicatedthat there would be a high-altitude cloud layer in the area.
   天气预报显示该地区将出现高层云层。
2. 2. During theflight, we often see high-altitude clouds as they drift across the sky.
   飞行过程中，我们经常看到高空云朵在天空中飘过。
3. 3. The high-altitude cloud layer can affect thetemperature and humidity of the surrounding area.
   高层云层可以影响周围地区的温度和湿度。