美国4月工厂订单月率录得-3.7%，为2024年1月以来最大降幅。

Group 1 - The core point of the article is that U.S. factory orders in April recorded a month-on-month decline of 3.7%, marking the largest drop since January 2024 [1] Group 2 - The decline in factory orders indicates potential challenges for the manufacturing sector, which may affect overall economic growth [1] - This significant decrease could lead to a reassessment of production strategies and inventory management within the industry [1]