Antigenic structure
[医] 抗原结构
🧩 词语组成解析
a. 抗原\\n[医] 抗原的
🗣️ 情景例句
Oh, Grandpa, I'm so happy to see you!
啊， 爷爷！ 见到您我真高兴。
How many passengers were on the train?
在火车上有多少旅客？
It marked the end of the great tradition of ships with sails and the beginning of a new era.
它标志着帆船伟大传统的结束与一个新纪元的开始。