Yun Qian
Yun Qian
activity created human pollution resulted
The pollution (that) resulted from human activity may have created a haze which absorbs and deflects the sun's rays.
acid block infamous rain solar
Haze doesn't just block the solar radiation. It is also infamous for acid rain and respiratory diseases.
brighter days frequent happen
Normally, more frequent cloud-free days should be sunnier and brighter but this doesn't happen in our study.