Palaechinoida
古海胆目
🗣️ 情景例句
Oh, that's not all.
噢， 还没完呢。
She's a widow.Her husband died last year.
她是一个寡妇。她的丈夫去年死了。
Before they were replaced by steamships,
在蒸汽船取代帆船之前。