Partial sum
[计] 部分和数
🧩 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
You ordered enough for three or four people,but I'm not complaining.
你叫了够三到四个人吃的菜，但我毫不在意。
Don't speak all you know, but know all you speak.
不要尽言所知，而要尽知所言。
Shortly after this the famous H. M. S. Challenger expedition established the study of the sea-floor as a subject worthy of the most qualified physicists and geologists.
此后不久，英国著名的“挑战者”号舰艇对海底的那次考察，把对海床的研究确立为一个值得一流物理学家和地质学家从事的研究课题。