今天，联合国正在开展一系列旨在改善人类社会和经济状况的活动，无论是与饥饿和贫困作斗争，为儿童接种疫苗，还是与气候变化作斗争和保护环境。
Today, UN is engaged in a number of activities aimed at improving the social and economic condition of humanity, whether it is the fight against hunger and poverty, the vaccination of children, or the fight against climate change and the protection of the environment.