Ccsf
[医][=cerebrospinal fluid(drug)concentration]脑脊液（药物）浓度
🗣️ 情景例句
Hey, let me take your picture!
嘿！让我给你拍一张照
I'm going to give him a silver one.
我正要给他一个银的。
As soon as this was done, they cooked a meal over an open fire.
这件事刚刚做完，他们就在篝火上烧起了饭。