sum的形容词
sum的形容词sumless 无数的;
sum
n. 金额；总数;
vi. 概括;
vt. 总结；合计
The sum of all the angles of a triangle is 180 degrees.
I was good at sums at school.
我上学时擅长算术。
This is the sum of my achievements so far.
这就是我目前的全部成就。
A large sum has been allocated for buying new books for the library.
已划拨了一大笔款子给图书馆购买新书。