请问:people who live and work in nosie condition go deaf easily.中为什么要叫上who?这句话中who是什么句子成分?

问题描述:

请问:people who live and work in nosie condition go deaf easily.中为什么要叫上who?
这句话中who是什么句子成分?

who live and work in nosie condition 是定语从句 who作为关系代词

who修饰先行词people,引导宾语从句 --手工劳动,