cyclonic vortex的用法和样例：
例句
- It is shown that the continued hail shooting process is caused by a cold vortex.
结果表明，这次连续性大范围冰雹天气过程是由冷性低涡影响产生的。 - The intensification of the positive vorticity and divergence at the low levels induced the formation of the meso-scale vortex and the center of torrential rainfall.
低层正涡度和辐合作用的加强，导致中尺度低涡的形成和暴雨中心的产生。
