The mandatory index component, also called a parameter specifier, is a number starting from 0 that identifies a corresponding item in the list of objects.

强制“索引”组件(也叫参数说明符)是一个从0开始的数字，可标识值列表中对应的元素。

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The mandatory index component, also called a parameter specifier, is a number starting from 0 that identifies a corresponding item in the list of objects.

强制“索引”组件(也叫参数说明符)是一个从0开始的数字，可标识值列表中对应的元素。

youdao