This is a piece of a living stromatolite, that I've just chopped.

这是一块活叠层，把切碎。

And billions of years ago, these stromatolites, ancient communities of photosynthetic bacteria that are equal parts biology and geology, may have exhaled the first breaths of life-giving oxygen.

数十亿年前这些叠层，古老光合细菌群落，们在生物学和地质学中是一样部分，可能已经呼出了第一口提供生气。

These calcareous structures — the result of what was a brand-new process, using solar radiation as a source of energy — are stromatolites, constructed by complex microbial communities, in particular cyanobacteria.

这些钙质结构是叠层，由复杂微生物群落构成，特别是蓝藻细菌。这是一个全新过程，利用太阳辐射作为能量来源。