Escherichia coli or fecal streptococci contamination will be indicated by the presence of fecal coliforms. 大腸埃希氏菌或鏈球菌會(huì)通過糞便大腸菌的存在而顯示出來。
The shape of the bacterium Escherichia coli might have evolved to cope with life in tight spaces, researchers suggest. 研究人員推測(cè)，大腸埃希氏菌的菌體外型也許和密閉空間生命競(jìng)爭(zhēng)有關(guān)。