Redledgeite
硅镁铬钛矿
🗣️ 情景例句
Oh, how do you do?
噢 你好吗?
My cousin is a member of a stamp club, He seems stamp collecting.
我的表兄是一个集邮俱乐部成员，他似乎很喜欢集邮。
And this is Chang-woo.He's Korean.
这位是昌宇。他是韩国人。