huò / dé / xìng / miǎn / yì / kě / yǐ / zài / gǎn / rǎn / huò / jiē / zhòng / yì / miáo / hòu / xíng / chéng

获得性免疫可以在感染或接种疫苗后形成。

Acquired immunity can develop after an infection or vaccination.