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
Oh. Oh, where did you get that?
噢。噢， 你们从哪儿弄来的？
He informed me of the event.
他通知我这件事。
so she ran straight at them.
于是她直冲过去。