We can all agree that walking behind someone who's buried in their phone is annoying.
원문출처 : https://www.cnn.com/2020/02/03/health/texting-pedestrian-safety-study-wellness-scli-intl/index.html
원문출처 : https://www.cnn.com/2020/02/03/health/texting-pedestrian-safety-study-wellness-scli-intl/index.html