Semiantigen
[医] 半抗原
🗣️ 情景例句
And how old are you?
你几岁了？
Would you please hold the door open for me?
可以请你为我把门拉着吗？
He added that a student had dressed up as a policeman and was playing all sorts of silly jokes on people.
还对工人说，有个学生常装扮成警察无聊地同别人开玩笑。