Compound sum
出国 Abroad[经] 复利本利和
🧩 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
It's just ... slow.
只是……太慢了。
How many passengers were on the train?
在火车上有多少旅客？
We're so proud of you.
我们十分为你骄傲。