Toad found himself flying through the air with the strong upward rush and delicate curve of a swallow.
托德发现自己以强劲向上的冲力飞上了天空，弧线像燕子优美。
Because, if you have a curve in space and say that you have wind or something like that, you cannot really ask how much air is flowing through the curve.
这是因为如果空间中有一条曲线，并假设存在风，或类似的流体，那么我们无法确定，空气通过曲线的量。
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