Ccsf
[医][=cerebrospinal fluid(drug)concentration]脑脊液（药物）浓度
🗣️ 情景例句
How was your trip?
你这一趟旅途还好吧？
If you consider that she's only been studying English a year, she speaks it very well.
你可以考虑到她那学一年的英语，她的英语说得非常好。
Same to you.
彼此彼此。