Lactoserum
抗乳血清
🗣️ 情景例句
Thank you.
谢谢 。
He went to grade school in New york and high school in Cicargo.
他在纽约上小学并在Cicargo上高中。
No, I think it'll be all right for him to go to school.
不，我想他去上学没什么关系。