Cusum
abbr. 累积和；累积和控制图（cumulative sum）
🗣️ 情景例句
No, by train.
不， 坐火车。
Save while you may, no morning sun lasts a whole day.
能节俭时就节俭，朝阳难照一整天。
The glasses keep their eyes safe.
眼镜可以使眼睛不受伤害。