Vector sum
[计] 向量和
🧩 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
Well, I'd better be on my way.
好啦，我该走了呢。
Let's leave the matter open.
这件事先上、悬着吧。
So it looks as if she meant to return.
因此看样子她好象要回来。