Seroconverted
(seroconvert 的过去时) vi.[生][医]血清转化(对疫苗产生抗体)
🗣️ 情景例句
I have been talking to a group of salesmen
我一直在与一群推销人员谈话
John has built up his own business.He owns a hotel.
约翰建立了他自己的生意，他拥有一家宾馆。
They're people I met during the trip.
他们是我旅行时认识的人。