飞行云

例句：

1. 1. The clouds were flying over the mountains in the sky.
   云朵在天空中飘过。
2. 2. The pilot flew the plane over the clouds.
   飞行员驾驶飞机飞越云层。
3. 3. The clouds were flying across the sky.
   云朵在天空中飘过。