It helps to know also that the water table can be further altered by impermeable layers in the soil, such as rocks or dense layers of clay called " hardpans" .

这还帮助我们了解土壤中的不透水层，例如岩称为“硬质地层”的致密层，也能进一步改变地下水位。

For underwater work projects, the workman wears a waterproof suit with his head imprisoned in a metal capsule, while he receives air from above by means of force pumps and flow regulators.

工人在水底下工作时，穿上～件不透水的衣服，头上套了一个金属的盒子，再利用打气机和节流器，就以从水上面获得空气。

Like fertilizer or buried under a layer of impermeable rock.

像肥料一样，埋在一层不透水的岩之下。

They took up a lot of space and created a huge impermeable surface.

它们占据了大量空间，形成了大面积的不透水表面。

Desert locusts are creatures of habit: females like to lay eggs in soil that is moist, but not sodden, and juveniles are more likely to survive if they are surrounded by ample foliage to eat.

沙漠蝗虫是有习惯性的动物：雌性喜欢在潮湿但不透水的土壤中产卵，而幼虫如果周围有充足的树食用，则更有能存活。

And we clothe it in brick and concrete and glass and steel, which are impervious surfaces that plants can only root in with the greatest difficulty.

我们用砖块、混凝土、玻璃和钢铁将其包裹起来，这些都是植物几乎无法扎根的不透水表面。

But it was hidden by a sheath as impermeable as Nicole's when they met and went together to a series of fittings.

但是当他们见面并一起去一系列试衣时， 它一个像妮一样不透水的护套所隐藏。

Next, decrease impervious surfaces by removing any pavement that can be replaced by something else or something more efficient.

接下来，通过移除任何以用其他东西更有效的东西代替的路面来减少不透水的表面。

Important papers are best kept in plastic boxes or bags that don't let any water through.

重要文件最好保存在不透水的塑料盒塑料袋中。