1. snow roller：雪晶 snow crystal | 雪捲 snow roller | 雪坑 nivation cirque
1. 这些雪卷在空地上形成只需要几个小时。
The snow rollers were formed in the space of just a few hours.
2. 凛冽的寒风将落在地面上的雪卷向空中，又吹进每一个洞穴和角落。
A sharp wind whipped the fallen snow up into the air and blew it into every hole and corner.
3. 他们可能看起来像麦田圈的冬天答案，但这些神秘的雪卷其实是一种罕见的自然现象，通常只存在於世界上最偏远和冰冻地区。
They may look like winter's answer to crop circles, but these mysterious snow rolls are in fact a rare natural phenomenon usually found only in the world's most remote and frozen regions.
4. 这是在美国爱达荷州克雷得蒙特市发现的高达2英尺的雪卷。
The snow rollers, some 2 feet high, were spotted near Craigmont, Idaho.