你每天的饮食才是营养的主要来源，包括维生素和矿物质。
Your daily diet should be the main source of your nutrients, including vitamins and minerals.
黄酮类化合物的主要来源包括：浆果、樱桃、红葡萄、苹果、柑橘类水果、花茎甘蓝、羽衣甘蓝、洋葱。
Good sources of flavonoids include berries, cherries, red grapes, apples, citrus fruit, broccoli, kale and Onions.
垃圾填埋场——不包括包装材料本身的生产——是空气污染、水污染的主要来源。
Landfills not included, the production of packaging material itself is a major source of air and water pollution.
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