Seroconversion
n. [生][医]血清转化
🗣️ 情景例句
And I'd like to give you a little something to take home. Let me unroll it.
对了，我有样小东西想送你，让我把它打开。
The scalded cat fears cold water.
一朝被蛇咬，十年怕井绳。
He feels ill.
他觉得不舒服。