sum什么意思

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sum什么意思

sum什么意思
sum什么意思

sum什么意思
sum
英 [sʌm]\x05 
美 [sʌm]\x05 
过去式:summed
过去分词:summed
现在分词:summing
第三人称单数:sums
n.金额;总数;要点
v.概括;总结;归纳;总计
用作名词 (n.)
I had to spend a large sum of money to get it back.
我得花一大笔钱才把它弄回来.
I save a nice little sum out of my wages each week.
我从每周的工资中节省一笔可观的金额.
用作动词 (v.)
We can sum up the main point of the lesson in three sentences.
我们可以用三句话来概括本课要点.
So,to sum up,we need to concentrate on staff training.
概括地说,我们需要集中精力进行职工培训.