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1·My friend is brilliant and by nature a describer of things felt and seen.

我的这位朋友才华横溢，天生擅长描述自己的感受与见闻。

2·Further, what does it tell you about the relationship between the describer and the described?

进一步地看，你从关于描述者和被描述的事物之间的关系上知道了什么？

3·The Fourier describer only describes the boundary shape of the planner target region, and can not reflect feature inside characteristic.

平面目标闭合曲线的傅里叶描述子只描述了目标区域的边界形状，无法反映目标内在属性。