protein

1. N-MASS Protein is a substance found in food and drink such as meat, eggs, and milk. You need protein in order to grow and be healthy. 蛋白質(zhì)

Fish was a major source of protein for the working man. 魚(yú)曾是勞動(dòng)者獲取蛋白質(zhì)的主要來(lái)源。