Seroconverter
vi. 【生物学、医学】血清转化, 对疫苗产生抗体
🗣️ 情景例句
You are a walking dictionary.
你是活字典。
No. I've been in California for the past month.
没有，我刚到加利福尼亚去了一个月。
It's the library's. Please be more careful from now on!
“是图书馆的书。从现在起请你倍加小心！”