Matroid
矩阵胚, 拟阵
🗣️ 情景例句
Would you excuse me?
失陪一下。
Love your neighbour, yet pull not down your hedge.
爱你的左邻右舍，但不要拆去你们之间的藩篱。
a ticklish business which is achieved with the aid of two tame elephants roped to the captive on either side.
这是一件棘手的事，需要在它两侧拴上两头驯服的大象才能完成。