This brings back a skepticism that has gone away recently, that superweeds and superpests could spread around the world, from biotechnology, that literally could destroy the world's food supply in very short order.
这就带来了最近才淡去的怀疑理论， 那就是超级杂草和超级害虫将有一天由于生物科技而霸占全球， 并在理论上迅速毁掉全球的 食物供应。