VOA慢速英语:Kenya Expanding Purple Tea Production

antioxidant – n. a substance that is added to food and other products to prevent harmful chemical reactions in which oxygen is combined with other substances

benefit – n. a good or helpful result or effect

stress – n. a state of mental tension and worry caused by problems in your life, work, etc.

alleviate – v. to reduce the pain or trouble of (something); to make (something) less painful, difficult, or severe

upmarket – adj. made for or appealing to people who have a lot of money

orthodox – adj. usual or traditional