Bidiagonal matrix
[计] 两对角线矩阵
🧩 词语组成解析
[计] 对角的
🗣️ 情景例句
That's a great idea, Grandpa!
这太好了， 爷爷。
We are happy to be of help.
我们十分乐意帮助。
I saw him playing football on the playground.
我看见他在操场上踢足球。