Seroconversions
(seroconversion 的复数) n.[生][医]血清转化
🗣️ 情景例句
Sounds good to me.
我来。
We never know the worth of water till the well is dry.
井干方知水可贵。
Well,they're trying to repair it,sir.
啊，他们正设法修呢，先生。