They then grew model plants in the lunar soil simulant containing these three bacteria species.

随后，研究人员在这三种细菌处理后的模拟月壤中播种了实验模式植物。

Within a period of 10 to 21 days, three of the bacteria species had doubled their amount of phosphorus content, a key element for plant growth.

磷是土壤中含有的一种植物必需营养元素。研究发现，在 10 至 21 天内，其中三种细菌将植物可利用磷含量增加了一倍。

Recent studies have also found a link between obesity and variations in the bacteria species that live in our digestive systems.

最近的研究还发现肥胖与生活在我们消化系统中的细菌种类的变化之间存在联系。