So far authorities have not indicated a possible time-frame for the phase-out of gas and diesel powered vehicles.

现在官方还没有明确指出逐步退出使用汽油及柴油机车可能的时间表。

Cutting down trees, blasting riverbanks with diesel powered fire hoses creating a slurry that gets sifted until " Eureka" , a tiny flake of gold.

砍伐树木，用柴油驱动的消防软管冲击河岸，形成一种浆状物，经过筛选，最终成为" 尤里卡" ，一片小小的金片。