Opv
[医][=oral polio vaccine]口服脊髓灰质炎疫苗
🗣️ 情景例句
Hello.
哈喽 。
I subscribed to a lot of periodicals last year.
去年我订了许多期刊。
Why don't you come a little earlier? About a quarter to.OK?
45分左右来，好吗？