sʌm noun
3
greater/more/better etc than the sum of its parts
having a quality or effectiveness as a group that you would not expect from the quality of each member (总体的作用)大于部分之和,个体相加不如集体的力量大
5
do your sums
to calculate whether you have enough money to do something [非正式,英] 算一算是否有足够的钱做某事 informal BrE
verb
11
sum sb/sth up
to form a judgment or opinion about someone or something 对某人/某事物作出判断; 对某人/某事物形成意见
帕特一眼就看清了当时的情势。
12
that (about) sums it up
used to say that a description of a situation is correct [口] 主要情况就是这样 spoken
“这么说你想让我们帮助你改变,却又觉得不可能改变,是吧?”“就是这个意思。”