Opv
[医][=oral polio vaccine]口服脊髓灰质炎疫苗
🗣️ 情景例句
I just want to say that I'm proud of her.
我只要说，我为她感到骄傲。
About how long does it take?
大约要坐多久？
Then the bees left the hive and went to the feeding place.
然后那些蜜蜂离开蜂箱，飞到喂食点去。