如果任一限是负的，就加上序列的长度。

If either bound is negative, the sequence's length is added to it.

youdao

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。

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.

youdao

目的研究熟悉和陌生人面照片与短声组成不同的刺激序列诱发伴随负变化(CNV)。

Objective The contingent negative variation (CNV) elicited by different stimulus paradigms consisted of tones and face photos of familiar persons and strangers were studied.

youdao