落叶在风中盘旋而下。

The leaves ___spiraled down in the wind.

由于疫情爆发，医疗费用迅速攀升到了难以承受的水平。

With the outbreak of the pandemic, medical costs ___spiraled to an unbearable level.

烟雾从烟囱中螺旋上升。

The smoke ___spiraled up from the chimney.