Aspens have long roots that burrow through the soil.

白杨有着钻透土壤的长根茎。

More and more of these glacier-fed rivers are merging together and burrowing through the surface.

越来越多源自冰川的河流汇集并在表层下穿过。

That fold burrowed through until it reached the other side, creating your donut-like through-gut in the process.

那个褶皱一直钻到另一边，在这个过程中创造了你甜甜圈一样的内脏。

But Eunotosaurus seemed to have a lot of adaptations for burrowing through dirt.

但是 Eunotosaurus 似乎对在泥土中挖洞有很多适应性。

These can burrow through earth, and could be used to analyse chemicals or find water.

它们可以钻入地下，可以用来分析化学物质或寻找水。

And not having legs can offer a lot of advantages if you're a reptile that burrows through the dirt.

如果你是一只在泥土中挖洞的爬行动物，没有腿可以提供很多优势。

That's because the way that snakes move seems to work best for either burrowing through soil, like a worm does, or propelling through water, as eels do.

这是因为蛇的移动方式似乎最适合在土壤中挖洞（如蠕虫）或在水中推进（如鳗鱼）。