美国天然气期货日内涨幅达3%，现报3.458美元/百万英热

Group 1 - The core point of the article is that U.S. natural gas futures experienced a daily increase of 3%, currently priced at $3.458 per million British thermal units [1] Group 2 - The report highlights the significant movement in the natural gas market, indicating a potential shift in supply and demand dynamics [1] - The price increase may reflect broader trends in energy markets, which could impact related sectors and investment strategies [1]