Elementary sum
[计] 基本合
🧩 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
She can't sit around and do nothing.
她总不能闲坐着无所事事呀。
Fine, thanks. And you?
很好，谢谢，你呢？
Excuse me. What's the time, please?
对不起，请问几点了？