China took aim on Monday at a U.S. government program to reduce American reliance on Chinese imports for rare earth magnets, a move that risks reigniting trade tensions with President Trump. 周一，中国针对美国政府一项旨在减少美国对中国进口稀土磁体依赖的一项计划采取行动，此举有可能重新燃起与特朗普总统之间的贸易紧张局势。…