慢速英语:研究人员对玉米进行基因改造以增加营养

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amino acid - n. any one of many acids that occur naturally in living things and that include some which form proteins​

commodity - n. something that is bought and sold​

genome - n. the complete set of genes or genetic material present in a cell or organism.​

kernel - n. one of the yellow seeds that cover an ear of corn​

nutrition - n. the process of eating the right kind of food so you can grow properly and be healthy​

methionine - n. a sulfur-containing amino acid that is a constituent of most proteins. It is an essential nutrient in the diet of vertebrates.​

staple - n. an important food that is eaten very often​

synthetic - adj. something made by combining different artificial substances​