The essence of the gray prediction model is to fit the known data sequence with an exponent form to a curve, and then extend the curve to the future in order to predict the unknown data.

灰色系统预测模型的本质是对已知数据序列进行类型为指数形式的曲线拟合，然后将此曲线延伸到未来，由此对未知的数据做出预测。

youdao

We were lucky to fall in with Kote Koubanishvilli, perhaps the county's leading exponent of this form of satirical, political wordplay.

BBC: To be in Tbilisi