短语词组短语double subscript [数]双下标subscript form 下标形式argument subscript [计]变元下标;自变量下标;翻译;变元下标英语declarator subscript 宣告符下标illegal subscript [计]非法下标primary subscript 主下标;主标subscript origin [计]下标起始值;翻译unique subscript 一标值 返回 subscript