These organics impregnate large volumes of sandstone.是什么意思？

These organics impregnate large volumes of sandstone.

这种有机质渗入了大面积的砂岩.

these

adj. 这些的；pron. 这些；

例句
There's lots of money about these days for schemes like this.
近来这类计划资金充足。

organics

--

例句
The organics are extracted with chloroform and weighed.
用氯仿将有机质提取出来并称重.

impregnate

vt. 灌注，使饱和，使怀孕；

例句
Undercover officers found drug-making equipment used to impregnate paper with LSD.
卧底警官发现了用于使迷幻药浸透到纸里的毒品制造设备。

large

adv. 大大地，夸大地，详细地，顺风地；adj. 大的，大规模的，大型号的，广泛的；v. 玩个痛快，（尤指跳舞和饮酒）作乐；

例句
The banks would be forced to absorb large losses...
银行将被迫承受巨大的损失。

volumes

n. 量( volume的名词复数 )，书，音量，卷；

例句
If export and import demand is elastic, then the change in trade volumes will operate to remove the surplus.
如果进出口需求具有灵活性，那么贸易额的变化则可能会抵消盈余。

of

prep. 关于，属于…的，由…制成；aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气]；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

sandstone

n. 砂岩，砂石；

例句
...a sandstone bed.
砂岩层