All of the crops that we eat today, wheat, rice and maize, are highly genetically modified from their ancestors, but we don't consider them GM because they're being produced by conventional breeding.
所有我们今天食用的作物 小麦，水稻和玉米 与祖先植株相比都是高度转基因的， 我们不认为它们是转基因作物 是因为它们一直 是用传统方式培育的。