Sbf
[医][=serologic-blocking factor]血清封闭因子，血清阻断因子
🗣️ 情景例句
I'm not upset at all.
一点也不。
Up to you.
随便你。
'Excuse me,' she said.'Can you tell me the way to King Street, please?'
“对不起，您能告诉我到国王街怎么走吗？”她说。