Cef
[医][=centrifugation extractable fluid]离心提取液
🗣️ 情景例句
Four o'clock at the advanced exercise class. With me.
四点钟去高级健身课， 跟我一起。
We really can't discount the price more than six percent.
我们真的无法提供超过6%的折扣。
Meanwhile, a number of university students have volunteered to drive buses while the strike lasts.
与此同时，有一部分大学生自愿在罢工期间驾驶公共汽车。