Polyerg
[医] 多能血清(单种血清而作用于异种抗原)
🗣️ 情景例句
It hurts so much when a baby gets his first teeth.
小孩子长第一颗牙齿时好痛哟。
I told him to stay for supper.
我告诉他留下来吃晚餐。
I know all about it.
我知道有关它的一切。