Triangular matrix
[计] 三角矩阵
🧩 词语组成解析
🗣️ 情景例句
And there's a phone call for you, Mr. Bennett. Bennett
先生， 有你的电话。
She conducted herself well.
她行为端正。
Looking up I saw that we were surrounded by children in rags who were looking at us silently as we ate.
我抬头一看，发现我们被一群衣衫褴褛的小孩团团围住了，他们在默不作声地看着我们吃饭。