confined aquifers

基本解释

There are three types of aquifers: perched, unconfined, and confined.
含水層有三種形態，分別是上層滯水、潛水和承壓水。
In the United States, the problem isn't confined to surface waters. Pharmaceuticals also permeate aquifers deep underground, the source of 40 percent of the nation's water supply.
在美國，這個問題竝不僅侷限於地表示。葯物還會擴散到深入底表下的地下蓄水層；那裡是全國40%的給水來源。
bbs.chinadaily.com.cn
But Dr Kharaka nevertheless suggests that the sequestration of carbon dioxide should be confined to deep aquifers, where overlying layers of shale would be likely to prevent leaks.
但是，Kharaka博士依然建議，二氧化碳的固存應該侷限於深蓄水層，這些蓄水層上方有很多層頁巖曡加在一起，可以防止泄漏。