yán jiū rén yuán / zhèng zài / xún zhǎo / yì zhǒng / gèng / ān quán / gèng / gāo xiào / de / yào wù / shū sòng méi jiè

研究人员正在寻找一种更安全、更高效的药物输送媒介。

Researchers are looking for a safer and more efficient drug delivery medium.