把這段話翻譯成英文 我感覺有道詞典上翻譯的不對 通過之後加倍給分

Spatiotemporal instability of ultrashort pulse space-time focusing dispersion effect of self-steepening nonlinear equation based on the spatiotemporal nonlinear dispersive medium instability, the expression of gain space focusing effect, arbitrary high order dispersion effect and self-steepening effect under the condition of the spectrum modulation instability...