sum1/sʌm; sʌm/n [C] 1 an amount of money 金额: The city has spent a large sum of money on parks. 这座城市花了一大笔钱在公园上。 2 the sum of sth the total when you add two or more numbers together 某事物的和[总和﹐总数]: The sum of 4 and 5 is 9. 4 和 5 的和是 9。3 BrE a simple calculation such as adding or dividing numbers【英】算术
sum2v summed , summing sum up phr v 1 to end a discussion or speech by giving the main information about it in a short statement 总结﹐概括: So, to sum up, we need to organize our time better. 因此﹐总而言之﹐我们需要更好地安排时间。sum sth up You should sum up your argument in the final paragraph. 你应该在最后一段总结论点。2 sum sth up to form an opinion about someone or something 对…形成意见: Pat summed up the situation at a glance. 帕特一眼就判断了当时的形势。 —summing-up n [C]