and percolated deep into the ground.雨水下落渗入地下

deep into深入

Some plants push their roots deep into the soil.

一些植物的根深深长入土中。

The explorers went deep into the jungle.

探险家们进入丛林深处。

living relics from this wetter time have a chance to cling on.就是那些幸存的古老生物的依附之地

cling on依附，执着

He had one last hope to cling on to.

他还抱着最后的一线希望。

Then they cling on even tighter.

然后,他们就更加执著了。

Hatchlings stick close to their mother.小鱼们都紧贴在母亲身边

stick to粘附在…上；紧跟，紧随

You'd better stick to your last.

你最好还是做自己分内的事。

We must stick to our task till it is finished.

我们必须继续工作，直至做好为止。