Ccsf
[医][=cerebrospinal fluid(drug)concentration]脑脊液（药物）浓度
🗣️ 情景例句
There are four of us including my parents, a younger sister and me.
有四口人，父母亲、妹妹和我。
Learning makes a good man better and ill man worse.
知识能使好人更好，坏人更坏。
I am told that you dance wonderfully well.
我听说你的舞跳得特棒。