位置:首页 > 英语听力 > 慢速和常速英语听力下载|Special English > 慢速英语|慢速英语听力下载
慢速英语:研究人员对玉米进行基因改造以增加营养
日期:2017-10-24
Words in This Story

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​
 2/3   首页 上一页 1 2 3 下一页 尾页