Triarthrus
三叶虫属
🗣️ 情景例句
What do we read?
我们读些什么呢？
In fifty years there'll be twenty people per square yard, it is written here.
这里写着，再过五十年每平方码将要住着20人的人口密度。
Good heavens! There you are!
哎呀！你们才回来！