Opv
[医][=oral polio vaccine]口服脊髓灰质炎疫苗
🗣️ 情景例句
He's not as lucky as I am
他不像我这样幸运地
Imagination is more important than knowledge.
想像力比知识更重要。
He found my lecture interesting.
他觉得我讲课有趣。