nonnegative integers短语¹¹⁴⁴⁶⁷⁺⁴ 基本例句 非负整数 The resulting value must be a nonnegative integer less than the sequence's length, and the sequence is asked to assign the assigned object to its item with that index.最后的值必须是一个小于该序列长度的非负整数，然后该序列就被请求将被赋对象赋值给它带那个指标的项。