n. (meteorology) rapid inward circulation of air masses about a low pressure center; circling counterclockwise in the northern hemisphere and clockwise in the southern
n. a violent rotating windstorm
词态变化
复数形式:cyclones
常见例句
1
plural of anti-cyclone
2
a severe tropical cyclone usually with heavy rains and winds moving a 73-136 knots (12 on the Beaufort scale)
3
plural of hydrocyclone
4
a tropical cyclone occurring in the western Pacific or Indian oceans
