The quantities of carbon dioxide sent belowground can be expressed in“ barrels,” the standard42- gallon unit of volume employed by the petroleum industry. 二氧化碳送入地底的量可用「」单位表示,这是石油业采用的标准容积单位,相当于159公升。
belowground
[ adj ]
under the level of the ground
<adj.all> belowground storage areas underground caverns