Opv
[医][=oral polio vaccine]口服脊髓灰质炎疫苗
🗣️ 情景例句
I'll join you in a minute.
我马上就来找你。
I'd like to sit in the front of the plane.
我要坐在飞机前部
It was necessary first to arrive at that degree of sophistication where we no longer set our own belief against ourneighbour's superstition.
不用自己的信仰去反对我们邻居的迷信。