boundary layer circulation的用法和样例：
例句
- Meaningfully, the changes of the stratospheric circulation were more than a month ahead of the snow storms.
更有意义的是，平流层环流的变化超前了一个多月。 - The visible satellite imageries on the day gradually revealed a low-level circulation centre drifting to the northeast, leaving the cloud bands near southeastern Hainan.
当天的可见光卫星云图可见天鹅的低层环流中心向东北飘移，而对流云带则停留于海南西南部。
