Yán / jiū / rén / yuán / guān / chá / le / yì / shēng / jūn / zài / cháng / dào / zhōng / de / dìng / zhí / qíng / kuàng

研究人员观察了益生菌在肠道中的定殖情况。

The researchers observed the colonization of probiotics in the intestines.