Difference operator
[计] 差分算子
🧩 词语组成解析
🗣️ 情景例句
May I pay in cash?
可以付现金吗？
All is fish that comes to his net.
到了网中都是鱼；只要到手全都要。
He was greeted by an unpleasant smell which convinced him that I was telling the truth.
一股怪味袭来，使他相信了我说的真话。