circumpolar vortex的用法和樣例：
例句
- The weather helps to break up a pattern of strong, cold winds called the circum polar vortex.
這樣的氣候有助於打破一個被稱作環極渦旋的強盛的寒冷風場。 - If the circumpolar vortex lasts longer than usual in future years, a large ozone hole could be expected to develop above the Arctic.
如果環極渦旋在未來幾年裡比正常情況下持續更長時間，一個大規模的臭氧空洞就很可能在北極上空發展起來。
