Underdeterminant
子行列式
🗣️ 情景例句
I have an autographed one in my office.
在我办公室里有一本签了名的。
Yes,you are.
是的，你是。
Experiments have proved that children can be instructed in swimming at a very early age.
实验证明，儿童在很小的时候就可以开始学习游泳。