Hantigen
鞭毛抗原
🗣️ 情景例句
I hope they aren't lost.
但愿没丢才好。
How about this instead?
不然这样好不好？
I am always amazed when I hear people saying that sport creates goodwill between the nations,
当我听人们说体育运动可创造国家之间的友谊，