And if you don't digest lactose, then it passes down into the lower gut, where it provides fuel for bacteria that ferment it, producing gas and a few other potential symptoms, such as pain bloating diarrhea or even nausea.
如果你消化乳糖,它会进入下消化道,在那里为发酵乳糖的细菌提供燃料,产生气体和一些其他潜在的症状,如疼痛、腹胀、腹泻甚至恶心。