Seron
[医]血清子：血清学上抗原类似的病毒组
🗣️ 情景例句
How long will this be on sale?
这种商品减价时间有多久？
When I had a rest, what were you doing?
当我休息时，你在做什么？
He is in his everyday clothes.
他穿着平常的衣服。