untapped reserves of oil未开采的石油储量We must make use of our untapped reservoirs of talent.我们必须利用我们尚未利用的人才.The region is thought to have some of the world's largest untapped oil reserves.该地区据信有世界上最大的未开发石油储藏....
他从围栏上的狭窄缺口里挤了过去。He squeezed through a narrow opening in the fence.羊群从树篱的缺口跑向田野.The sheep got into the field through a gap in the hedge.这杯子上有个缺口.There's a chip in this cup....