Nbcs
[医][=newborn calf serum]新生牛血清
🗣️ 情景例句
This is Alexandra Pappas, and this is my grandson Robbie,
这是Alexandra Pappas ，这是我孙子Robbie
I'm glad to hear about your graduation.
我很高兴听到你毕业的消息。
Yes, Mom, said Lucy. I haven't forgotten anything.
“齐了，妈妈”露西说，“我什么也没忘记。”