Seroconversion
n. [生][医]血清转化
🗣️ 情景例句
I heard that some tours actually go down into the canyon. Is that true?
我听说有的旅游团真正下到峡谷里去了。那是真的吗？
Can't be picky.
不可以偏食。
This is last order we will be placing for a while.
这是最后一次下订单，我们暂时不再订货了。