Seroconversion
n. [生][医]血清转化
🗣️ 情景例句
Please give my best regards to your sister.
请向你妹妹转达我最诚挚的问候。
I've heard so much about you!
久仰大名！
It's time I went and picked up my little girl from school.
我该去学校接我的小女儿了。