Last year was the world's most miserable for more than a decade, according to a survey of people's emotions in more than 145 countries.
원문출처 : https://www.cnn.com/2018/09/12/world/2017-negative-year-study-intl/index.html
원문출처 : https://www.cnn.com/2018/09/12/world/2017-negative-year-study-intl/index.html