1 an amount of money 一笔(钱):
The industry has spent huge sums of money modernizing its equipment.业界已耗费巨额资金使设备现代化。
2 [usu.sing] the sum (of sth) the amount that you get when you add two or more numbers together 和;总数:
The sum of two and five is seven.二加五等于七。
3 a simple problem that involves calculating numbers 算术题:
to do sums in your head心算
sum²
/sʌm ||; sʌm/verb
(summing;summed)
sum (sth) up to describe in a few words the main ideas of what sb has said or written 总括:
To sum up, there are three options here...概括地说,有三种选择…sum sb/sth up to form an opinion about sb/sth 形成看法:
He summed the situation up immediately.他立即认清了当时的情况。