待定的英文：
undetermined

descartes's solution of a depressed quarto equation employs the method of undetermined coefficients
笛卡儿的分解四次方程的解法采用待定系数。

There were some uncommitted gas reserves.
有一些用途待定的汽油储备。

Descartes's solution of a depressed quartu equation employs the method of undetermind coefficients.
笛卡儿的分解四次方程的解法采用待定系数。

descartes's solution of a depressed quarto equation employs the method of undetermined coefficients
笛卡儿的分解四次方程的解法采用待定系数。

Ironically, today's scofflaw spirit, whatever its undetermined origins, is being encouraged unwittingly by government at many levels
具有讽刺意味的是，今天的藐视法令行为，不管起因如何，却都能受到各级政府的极不明智的纵容。