Submatrices
(submatrix 的复数) [计] 子矩阵
🗣️ 情景例句
The pollution in Beijing is alarming.
北京的污染给人们敲起了警钟。
I went to bed at 11:30 p.m.
我在晚上11:30点睡觉了。
Alf did this for over two years and his fellow dustmen kept his secret Alf's wife has never discovered that she married a dustman and she never will, for Alf has just found another job.
两年多以来，艾尔弗一直这样，他的同事也为他保守秘密。 艾尔弗的妻子一直不知道她嫁给了一个清洁工，而且她永远也不会知道了，因为艾尔弗已找到薪职，