Arithmetic sum
[计] 算术和
🧩 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
What works?
什么有效！
The train is comfortable.
坐火车很舒服。
I stopped and he asked me for a lift.
我把车停下，他向我提出要求搭车。