Total sum
[经] 总数
🧩 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
Good morning, Dad.
早安， 爸爸。
Your niece is engaged,isn't she?
你的侄女订婚了，是吗？
You've done very well and made lots of progress.
你功课学得很好，进步很大。