天然气及石油矿床的勘探的背后是高昂的成本与巨大的经济风险。

The prospecting for natural gas and crude oil deposits involves extremely high costs and economic risks.

youdao

天然气及石油矿床的勘探的背后是高昂的成本与巨大的经济风险。

The prospecting for natural gas and crude oil deposits involves extremely high costs and economic risks.

youdao