Matrix operation
[计] 矩阵运算
🧩 词语组成解析
🗣️ 情景例句
You must have the wrong number.
你一定打错电话了。
An empty purse frightens many friends.
曩中无分文，亲友不上门。
It seems that man was making a real effort to understand the seasons 20,000 years earlier than has been supposed.
看来人类早就致力于探索四季变迁了，比人们想像的要早20，000年。