Matroid
矩阵胚, 拟阵
🗣️ 情景例句
What? Oh, yes. Starving. Well, I...
什么？ 噢， 是， 我很饿。好啦 ，我……
We used to have a lot of interesting friends.
我们过去常有很多有趣的朋友。
I'm from Hangzhou. What about you?
杭州，你呢？