Fix grammar in this sentence: In the aspect of the research of construction content, the researches by Buffel and Phillipson (2011) found that older adults ' subjective well-being have a direct relations with built environment of the communities.
In the aspect of the research of construction contents, the research by Buffel and Phillipson (2011) found that older adults ' subjective well-being has a direct relation with the built environment of the community.