VOA慢速英语:Growing Vegetables Without Soil Inside the Home

edible – adj. suitable or safe to eat

nutritional – adj. eating the right kind of food so you can grow properly and be healthy

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

sustainable – adj. able to be used without being completely used up or destroyed

culture – n. the process of growing living material is a prepared mixture