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1·Accordding to the relationship between derivative and Lie derivative, an new zero dynamic algorithm is proposed.

并根据李导数和导数的关系提出了一种实用的零动态算法。

2·I wish I was your derivative so I could lie tangent to your curves.

我希望我是你的导数，这样我就能成为一条切线，躺在你的曲线上。