Partial sum
[计] 部分和数
🧩 词语组成解析
sum
[sʌm]
n. 总数;算术;金额;概略，要点;
vt.& vi. 总计;总结，概括;归纳;
🗣️ 情景例句
Haven't you finished balancing that checkbook?
你还没有核对完支票簿帐目吗？
Thank you for your kind cooperation.
谢谢您的合作。
Did you give our English teacher a card for Teachers' Day?
你给了我们的英语老师教师节贺卡了吗？