Ccsf
[医][=cerebrospinal fluid(drug)concentration]脑脊液（药物）浓度
🗣️ 情景例句
The company is Craft and Craft,
这家公司叫Craft and Craft，
What a coincidence!
真巧！
A tramp may ask you for money, but he will never ask you to feel sorry for him.
游浪汉可能会向你讨钱，但他从来不要你可怜他。