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
Take care on your way back.
回程保重了。
If it doesn't rain tomorrow,I think I'll go shopping.
如果明天不下雨，我将去购物。
As far as policy is concerned, I have to say something.
谈到政策，我得说几句。