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
We're on the fifth floor.
我们在五楼。
I still have to fill 16 hours in my major.
我必须重修主修科目16小时。
and usually lashes fiercely with its trunk in all directions.
往往是用鼻子朝各个方向猛烈地甩动。