circumpolar vorticity

• 环极涡旋

circumpolar vorticity的用法和样例：

例句

1. If the circumpolar vortex lasts longer than usual in future years, a large ozone hole could be expected to develop above the Arctic.
   如果环极涡旋在未来几年里比正常情况下持续更长时间，一个大规模的臭氧空洞就很可能在北极上空发展起来。