Seroconversion
n. [生][医]血清转化
🗣️ 情景例句
It's completely beyond my grasp.
我完全摸不着头脑。
Sorry, I guess I wasn't thinking. I won't do it again.
对不起。我对这事没想过，下次不这样了。
Some of my acquaintances in the country come up to town once or twice a year to visit the theatre as a special treat.
我在乡村有一些熟人，他们每年进城来看一回或几回戏，并把此看作一种特殊的享受。