When this happens along a front, a roll cloud can form, often with air actually circulating along the horizontal axis of the cloud.

在这种情景发生之前，云卷往往可以形成与实际横向运动云的循环空气。

youdao

When this happens along a front, a roll cloud can form, often with air actually circulating along the horizontal axis of the cloud.

在这种情景发生之前，云卷往往可以形成与实际横向运动云的循环空气。

youdao