Seroconvert
vi.[生][医]血清转化(对疫苗产生抗体)
🗣️ 情景例句
Good afternoon, Mr. Chen. Thank you very much.
下午好，陈先生。非常感谢。
With my heart in my boots, I went into the dark room.
我战战兢兢地走进那黑洞洞的房间。
My boss answered the telephone.
办公室，是我的老板接的。