高積雲？浮雲似一群綿羊 Altocumulus clouds like a flock of sheep?

(English at the bottom)

7 Jan 2017

下午跑步時無意中抬頭一看藍天，

高積雲就是如此有清晰邊界，

好像綿羊乖乖被牧羊人趕成一群！

可能雲絮被從兩個方向吹來的風「緊逼」在一起，

變成一條狹長雲帶，

由天的東北面一直伸延至西南方，

這照片只顯示東北方的末端而已。

現在回想，應該用錄影功能拍攝短片，

才能反映它的長度！

I was running in the afternoon when I looked up at the blue sky and

found this interesting scenery,

like a flock of sheep guided by the shepherd.

The altocumulus clouds were actually a very long band of clouds,

which might be clouds 'packed together' 

by the wind blowing from two directions on both sides?

The band of clouds stretched from the east to the west. 

I should have taken a video to show its full length.