Placoderm
n. [古生]盾皮鱼
🗣️ 情景例句
Oh yes, the May Fourth Movement. I've read about it.
哦，是的，五四运动，我听说过。
It's a busy street.
这是一个繁忙的街道。
Some fishermen are unlucky.
有些垂钓者就是不走运，