zhè / zhǒng / shēn / zhì / jì / zài / zǎo / qī / yī / xué / zhōng / céng / yòng / lái / zhì / liáo / gǎn / rǎn / xìng / jí / bìng

这种砷制剂在早期医学中曾用来治疗感染性疾病。

This arsenic preparation was once used in early medicine to treat infectious diseases.