Hantigen
鞭毛抗原
🗣️ 情景例句
I expected something better.
我所期望的比这要好。
Don't look wise.
别自作聪明。
that is something like 6,000,000 spiders of different kinds on a football pitch.
这就是说，在一个足球场上约有600万只不同种类的蜘蛛。