剑桥词典a substance in the oil from some fish such as tuna and salmon and in some seeds , thought to be good for your health 奥米加三脂肪酸（金枪鱼、鲑鱼等鱼类的油脂中含有的一种物质，也见于某些种子，据信有益于人体健康） 返回 Omega-3