set of numbers的用法和樣例：
例句
- Average a set of numbers.
取一組數的平均值 - A generalization of arithmetic in which symbols, usually letters of the alphabet, represent numbers or members of a specified set of numbers and are related by operations that hold for all numbers in the set.
代數學(xué)計算的普遍原理，其中通常為字母表中字母的符號，其代表數字或一組特定數字中的幾個(gè)數字，它們通過(guò)對組中全部數字都適合的運算法則相聯(lián)系
