Seroconversion
n. [生][医]血清转化
🗣️ 情景例句
You tried calling the number on the collar?
你照狗脖子上项圈的电话号码打过电话了吗？
Will you please spell his name for me?
请你把他的名字拼给我好吗？
It's too hard. Oh, dear! Is it broken?
太难了，天那！风筝被弄坏了！