1. Water behind the boat swirled. �����ˮ�������������С�
2. Wind whistles through my helmet, then we're aboard the Phoenix and launching upwards in a swirl of leaves, grass and dust. ת�����ڴ�Խ�ҵĸֿ���Ȼ�����Ǵ�˷�˳Ƕ�����������Ҷ���ݺͻҳ���һ�����з��淢�䡣
3. This paper discusses the separation principle of toroidal swirl separator, and deducts the movement rule of granule in the separator and the critical particle diameter. ����̽���Ե������������������ķ���������Ƶ����˿������������ڵ��˶����ɺͱ�������ٽ�������
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n.
1. the shape of something rotating rapidly
2. turn in a twisting or spinning motion
3. flow in a circular current, of liquids
