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
Three minutes to play.
还剩三分钟。
He was so angry, he began to jump and down.
他愤怒得开始顿足。
A moment later, the Class 4 runner fell and hurt his leg, but he quickly got up and went on running.
过了一会儿，4班的运动员摔倒了，伤了腿，但是他很快爬起来，继续往前跑。