infection of the intestines with protozoa found in contaminated food and water; characterized by diarrhea and nausea and flatulence and abdominal discomfort
giardiasis详细解释
gi.ar.di.a.sis n.（名词）Intestinal infection with the protozoanGiardia lamblia. It is usually asymptomatic in human beings but may produce abdominal cramps, diarrhea, and nausea. 贾第虫病：由原生动物引起的肠道感染（贾第虫） 。人得了这种病经常是无症状的但可能产生腹部痉挛、腹泻和呕吐
