VOA慢速英语:卫生危机显示出对中国医疗用品的依赖性

pharmaceutical –n. related to the production and sale of drugs and medicines

ingredient(s) –n. materials used to make a food, medicine or similar product

supply chain –n. a network of businesses that provide the materials, manufacturing and services necessary to create the products of an industry for customers in a certain market

tend –v. what often happens