Ab.
[医] 抗体
🗣️ 情景例句
There's a conversation we have to finish.
我们有一段话还没有谈完呢。
While we were having breakfast,John was talking on the telephone.
当我们正在吃早餐时，约翰正在打电话。
We can offer a 10% discount for orders over 10000 pieces.
订购一万个以上，我们可以打九折。