Preimmunization
[医] 幼儿期免疫接种
🗣️ 情景例句
I've been thinking a lot about our responsibilities
我对于我们的职责想了很多
Pat began to feel unhappy about what he had done.
帕特开始对自己所做的事感到悲伤。
The train arrived on time.
火车准时到达。