She later determined the pigment was produced by the aquatic bacterium Leptothrix ochracea.

她后来确定，这种颜料由水生菌赭色纤毛菌制造。

She later determined the pigment was produced by the aquatic bacterium Leptothrix ochracea.

她后来确定这种色素是由水生细菌 Leptothrix ochracea 产生的。