Such low levels of sulfate indicate that the Archean atmosphere was virtually devoid of oxygen.
Such low levels of sulfate indicate that the Archean atmosphere was virtually devoid of oxygen.
如此低的硫酸盐浓度，表示太古代大气中的氧气极为稀薄。
Such low levels of sulfate indicate that the Archean atmosphere was virtually devoid of oxygen.
如此低的硫酸盐浓度，表示太古代大气中的氧气极为稀薄。