巴西央行：由于美国的经济政策和经济前景，特别是其贸易和财政政策，全球经济环境变得更加不利和不确定。地缘政治紧张局势加剧之际，新兴市场经济体需格外谨慎应对局势。

Group 1 - The core viewpoint of the article highlights that the global economic environment has become more unfavorable and uncertain due to the economic policies and outlook of the United States, particularly its trade and fiscal policies [1] - Emerging market economies need to exercise extra caution in response to the escalating geopolitical tensions [1]