boundary layer circulation的用法和樣例：
例句
- Meaningfully, the changes of the stratospheric circulation were more than a month ahead of the snow storms.
更有意義的是，平流層環流的變化超前了一個多月。 - 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.
當天的可見光衛星雲圖可見天鵝的低層環流中心向東北飄移，而對流雲帶則停留於海南西南部。
