美国总统特朗普签署降低药品价格的行政命令。

Core Viewpoint - The article discusses President Trump's signing of an executive order aimed at reducing drug prices in the United States [1] Group 1 - The executive order is part of a broader initiative to lower prescription drug costs for consumers [1] - The order is expected to impact pharmaceutical companies by potentially altering pricing strategies and market dynamics [1] - The administration aims to increase transparency in drug pricing, which may lead to more competitive pricing in the industry [1]