cyclonic vortex的用法和樣例：
例句
- It is shown that the continued hail shooting process is caused by a cold vortex.
結果表明，這次連續性大範圍冰雹天氣過程是由冷性低渦影響產生的。 - 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.
低層正渦度和輻合作用的加強，導致中尺度低渦的形成和暴雨中心的產生。
