Frei antigen
[医] 弗赖氏抗原, 鼠脑抗原
🧩 词语组成解析
n. 弗雷（瑞士足球运动员）
antigen
['æntidʒən]
n. 抗原;
🗣️ 情景例句
Don't mention it. What would you like to drink?
别客气，想喝点什么？
How did you break your leg?
你怎么弄断了腿？
Yes, they are.
是的。