Purple bacteria, or purple phototrophic bacteria, to be more precise, are a group of bacterial species that can make their own food using photosynthesis, kind of like plants and algae do.

紫色细菌，或者更准确地说，紫色光合细菌是一组细菌物种，它们可以利用光合作用制造自己的食物，有点像植物和藻类。