Difference operator
[计] 差分算子
🧩 词语组成解析
🗣️ 情景例句
Shubert Alley, center of the theater on Broadway. Shubert Alley
百老汇戏剧中心。
By the way,who are you waiting for?
顺便说,你正在等谁？
If explosives are used, vibrations will cause the roof of the mine to collapse.
如果用炸药爆破，震动会引起矿顶塌落。