Endoceratite
內(nèi)角石屬的化石
??? 情景例句
Sorry, I've got people coming over tonight.
很抱歉，今晚有客人要來。
You are older than I am.
你比我年老。
I'm calling about mistake on our last invoice.
我打電話來，是因為上回的發(fā)票有錯。