The main effect factors for the single ones are the level of education, occupation, having close friends or not, etc.

影响独身老年人幸福度主要因素：文化程度、职业、有无亲密朋友。

youdao

The main effect factors for the single ones are the level of education, occupation, having close friends or not, etc.

影响独身老年人幸福度主要因素：文化程度、职业、有无亲密朋友。

youdao